OK, let's work through this together. We're starting with 664 and we're going to multiply it by 497, which means we add 664 to itself 497 times.
Step 1: 0 + 664 = 664
Step 2: 664 + 664 = 1328
Step 3: 1328 + 664 = 1992
Step 4: 1992 + 664 = 2656
Step 5: 2656 + 664 = 3320
Step 6: 3320 + 664 = 3984
Step 7: 3984 + 664 = 4648
Step 8: 4648 + 664 = 5312
Step 9: 5312 + 664 = 5976
Step 10: 5976 + 664 = 6640
Step 11: 6640 + 664 = 7304
Step 12: 7304 + 664 = 7968
Step 13: 7968 + 664 = 8632
Step 14: 8632 + 664 = 9296
Step 15: 9296 + 664 = 9960
Step 16: 9960 + 664 = 10624
Step 17: 10624 + 664 = 11288
Step 18: 11288 + 664 = 11952
Step 19: 11952 + 664 = 12616
Step 20: 12616 + 664 = 13280
Step 21: 13280 + 664 = 13944
Step 22: 13944 + 664 = 14608
Step 23: 14608 + 664 = 15272
Step 24: 15272 + 664 = 15936
Step 25: 15936 + 664 = 16600
Step 26: 16600 + 664 = 17264
Step 27: 17264 + 664 = 17928
Step 28: 17928 + 664 = 18592
Step 29: 18592 + 664 = 19256
Step 30: 19256 + 664 = 19920
Step 31: 19920 + 664 = 20584
Step 32: 20584 + 664 = 21248
Step 33: 21248 + 664 = 21912
Step 34: 21912 + 664 = 22576
Step 35: 22576 + 664 = 23240
Step 36: 23240 + 664 = 23904
Step 37: 23904 + 664 = 24568
Step 38: 24568 + 664 = 25232
Step 39: 25232 + 664 = 25896
Step 40: 25896 + 664 = 26560
Step 41: 26560 + 664 = 27224
Step 42: 27224 + 664 = 27888
Step 43: 27888 + 664 = 28552
Step 44: 28552 + 664 = 29216
Step 45: 29216 + 664 = 29880
Step 46: 29880 + 664 = 30544
Step 47: 30544 + 664 = 31208
Step 48: 31208 + 664 = 31872
Step 49: 31872 + 664 = 32536
Step 50: 32536 + 664 = 33200
Step 51: 33200 + 664 = 33864
Step 52: 33864 + 664 = 34528
Step 53: 34528 + 664 = 35192
Step 54: 35192 + 664 = 35856
Step 55: 35856 + 664 = 36520
Step 56: 36520 + 664 = 37184
Step 57: 37184 + 664 = 37848
Step 58: 37848 + 664 = 38512
Step 59: 38512 + 664 = 39176
Step 60: 39176 + 664 = 39840
Step 61: 39840 + 664 = 40504
Step 62: 40504 + 664 = 41168
Step 63: 41168 + 664 = 41832
Step 64: 41832 + 664 = 42496
Step 65: 42496 + 664 = 43160
Step 66: 43160 + 664 = 43824
Step 67: 43824 + 664 = 44488
Step 68: 44488 + 664 = 45152
Step 69: 45152 + 664 = 45816
Step 70: 45816 + 664 = 46480
Step 71: 46480 + 664 = 47144
Step 72: 47144 + 664 = 47808
Step 73: 47808 + 664 = 48472
Step 74: 48472 + 664 = 49136
Step 75: 49136 + 664 = 49800
Step 76: 49800 + 664 = 50464
Step 77: 50464 + 664 = 51128
Step 78: 51128 + 664 = 51792
Step 79: 51792 + 664 = 52456
Step 80: 52456 + 664 = 53120
Step 81: 53120 + 664 = 53784
Step 82: 53784 + 664 = 54448
Step 83: 54448 + 664 = 55112
Step 84: 55112 + 664 = 55776
Step 85: 55776 + 664 = 56440
Step 86: 56440 + 664 = 57104
Step 87: 57104 + 664 = 57768
Step 88: 57768 + 664 = 58432
Step 89: 58432 + 664 = 59096
Step 90: 59096 + 664 = 59760
Step 91: 59760 + 664 = 60424
Step 92: 60424 + 664 = 61088
Step 93: 61088 + 664 = 61752
Step 94: 61752 + 664 = 62416
Step 95: 62416 + 664 = 63080
Step 96: 63080 + 664 = 63744
Step 97: 63744 + 664 = 64408
Step 98: 64408 + 664 = 65072
Step 99: 65072 + 664 = 65736
Step 100: 65736 + 664 = 66400
Step 101: 66400 + 664 = 67064
Step 102: 67064 + 664 = 67728
Step 103: 67728 + 664 = 68392
Step 104: 68392 + 664 = 69056
Step 105: 69056 + 664 = 69720
Step 106: 69720 + 664 = 70384
Step 107: 70384 + 664 = 71048
Step 108: 71048 + 664 = 71712
Step 109: 71712 + 664 = 72376
Step 110: 72376 + 664 = 73040
Step 111: 73040 + 664 = 73704
Step 112: 73704 + 664 = 74368
Step 113: 74368 + 664 = 75032
Step 114: 75032 + 664 = 75696
Step 115: 75696 + 664 = 76360
Step 116: 76360 + 664 = 77024
Step 117: 77024 + 664 = 77688
Step 118: 77688 + 664 = 78352
Step 119: 78352 + 664 = 79016
Step 120: 79016 + 664 = 79680
Step 121: 79680 + 664 = 80344
Step 122: 80344 + 664 = 81008
Step 123: 81008 + 664 = 81672
Step 124: 81672 + 664 = 82336
Step 125: 82336 + 664 = 83000
Step 126: 83000 + 664 = 83664
Step 127: 83664 + 664 = 84328
Step 128: 84328 + 664 = 84992
Step 129: 84992 + 664 = 85656
Step 130: 85656 + 664 = 86320
Step 131: 86320 + 664 = 86984
Step 132: 86984 + 664 = 87648
Step 133: 87648 + 664 = 88312
Step 134: 88312 + 664 = 88976
Step 135: 88976 + 664 = 89640
Step 136: 89640 + 664 = 90304
Step 137: 90304 + 664 = 90968
Step 138: 90968 + 664 = 91632
Step 139: 91632 + 664 = 92296
Step 140: 92296 + 664 = 92960
Step 141: 92960 + 664 = 93624
Step 142: 93624 + 664 = 94288
Step 143: 94288 + 664 = 94952
Step 144: 94952 + 664 = 95616
Step 145: 95616 + 664 = 96280
Step 146: 96280 + 664 = 96944
Step 147: 96944 + 664 = 97608
Step 148: 97608 + 664 = 98272
Step 149: 98272 + 664 = 98936
Step 150: 98936 + 664 = 99600
Step 151: 99600 + 664 = 100264
Step 152: 100264 + 664 = 100928
Step 153: 100928 + 664 = 101592
Step 154: 101592 + 664 = 102256
Step 155: 102256 + 664 = 102920
Step 156: 102920 + 664 = 103584
Step 157: 103584 + 664 = 104248
Step 158: 104248 + 664 = 104912
Step 159: 104912 + 664 = 105576
Step 160: 105576 + 664 = 106240
Step 161: 106240 + 664 = 106904
Step 162: 106904 + 664 = 107568
Step 163: 107568 + 664 = 108232
Step 164: 108232 + 664 = 108896
Step 165: 108896 + 664 = 109560
Step 166: 109560 + 664 = 110224
Step 167: 110224 + 664 = 110888
Step 168: 110888 + 664 = 111552
Step 169: 111552 + 664 = 112216
Step 170: 112216 + 664 = 112880
Step 171: 112880 + 664 = 113544
Step 172: 113544 + 664 = 114208
Step 173: 114208 + 664 = 114872
Step 174: 114872 + 664 = 115536
Step 175: 115536 + 664 = 116200
Step 176: 116200 + 664 = 116864
Step 177: 116864 + 664 = 117528
Step 178: 117528 + 664 = 118192
Step 179: 118192 + 664 = 118856
Step 180: 118856 + 664 = 119520
Step 181: 119520 + 664 = 120184
Step 182: 120184 + 664 = 120848
Step 183: 120848 + 664 = 121512
Step 184: 121512 + 664 = 122176
Step 185: 122176 + 664 = 122840
Step 186: 122840 + 664 = 123504
Step 187: 123504 + 664 = 124168
Step 188: 124168 + 664 = 124832
Step 189: 124832 + 664 = 125496
Step 190: 125496 + 664 = 126160
Step 191: 126160 + 664 = 126824
Step 192: 126824 + 664 = 127488
Step 193: 127488 + 664 = 128152
Step 194: 128152 + 664 = 128816
Step 195: 128816 + 664 = 129480
Step 196: 129480 + 664 = 130144
Step 197: 130144 + 664 = 130808
Step 198: 130808 + 664 = 131472
Step 199: 131472 + 664 = 132136
Step 200: 132136 + 664 = 132800
Step 201: 132800 + 664 = 133464
Step 202: 133464 + 664 = 134128
Step 203: 134128 + 664 = 134792
Step 204: 134792 + 664 = 135456
Step 205: 135456 + 664 = 136120
Step 206: 136120 + 664 = 136784
Step 207: 136784 + 664 = 137448
Step 208: 137448 + 664 = 138112
Step 209: 138112 + 664 = 138776
Step 210: 138776 + 664 = 139440
Step 211: 139440 + 664 = 140104
Step 212: 140104 + 664 = 140768
Step 213: 140768 + 664 = 141432
Step 214: 141432 + 664 = 142096
Step 215: 142096 + 664 = 142760
Step 216: 142760 + 664 = 143424
Step 217: 143424 + 664 = 144088
Step 218: 144088 + 664 = 144752
Step 219: 144752 + 664 = 145416
Step 220: 145416 + 664 = 146080
Step 221: 146080 + 664 = 146744
Step 222: 146744 + 664 = 147408
Step 223: 147408 + 664 = 148072
Step 224: 148072 + 664 = 148736
Step 225: 148736 + 664 = 149400
Step 226: 149400 + 664 = 150064
Step 227: 150064 + 664 = 150728
Step 228: 150728 + 664 = 151392
Step 229: 151392 + 664 = 152056
Step 230: 152056 + 664 = 152720
Step 231: 152720 + 664 = 153384
Step 232: 153384 + 664 = 154048
Step 233: 154048 + 664 = 154712
Step 234: 154712 + 664 = 155376
Step 235: 155376 + 664 = 156040
Step 236: 156040 + 664 = 156704
Step 237: 156704 + 664 = 157368
Step 238: 157368 + 664 = 158032
Step 239: 158032 + 664 = 158696
Step 240: 158696 + 664 = 159360
Step 241: 159360 + 664 = 160024
Step 242: 160024 + 664 = 160688
Step 243: 160688 + 664 = 161352
Step 244: 161352 + 664 = 162016
Step 245: 162016 + 664 = 162680
Step 246: 162680 + 664 = 163344
Step 247: 163344 + 664 = 164008
Step 248: 164008 + 664 = 164672
Step 249: 164672 + 664 = 165336
Step 250: 165336 + 664 = 166000
Step 251: 166000 + 664 = 166664
Step 252: 166664 + 664 = 167328
Step 253: 167328 + 664 = 167992
Step 254: 167992 + 664 = 168656
Step 255: 168656 + 664 = 169320
Step 256: 169320 + 664 = 169984
Step 257: 169984 + 664 = 170648
Step 258: 170648 + 664 = 171312
Step 259: 171312 + 664 = 171976
Step 260: 171976 + 664 = 172640
Step 261: 172640 + 664 = 173304
Step 262: 173304 + 664 = 173968
Step 263: 173968 + 664 = 174632
Step 264: 174632 + 664 = 175296
Step 265: 175296 + 664 = 175960
Step 266: 175960 + 664 = 176624
Step 267: 176624 + 664 = 177288
Step 268: 177288 + 664 = 177952
Step 269: 177952 + 664 = 178616
Step 270: 178616 + 664 = 179280
Step 271: 179280 + 664 = 179944
Step 272: 179944 + 664 = 180608
Step 273: 180608 + 664 = 181272
Step 274: 181272 + 664 = 181936
Step 275: 181936 + 664 = 182600
Step 276: 182600 + 664 = 183264
Step 277: 183264 + 664 = 183928
Step 278: 183928 + 664 = 184592
Step 279: 184592 + 664 = 185256
Step 280: 185256 + 664 = 185920
Step 281: 185920 + 664 = 186584
Step 282: 186584 + 664 = 187248
Step 283: 187248 + 664 = 187912
Step 284: 187912 + 664 = 188576
Step 285: 188576 + 664 = 189240
Step 286: 189240 + 664 = 189904
Step 287: 189904 + 664 = 190568
Step 288: 190568 + 664 = 191232
Step 289: 191232 + 664 = 191896
Step 290: 191896 + 664 = 192560
Step 291: 192560 + 664 = 193224
Step 292: 193224 + 664 = 193888
Step 293: 193888 + 664 = 194552
Step 294: 194552 + 664 = 195216
Step 295: 195216 + 664 = 195880
Step 296: 195880 + 664 = 196544
Step 297: 196544 + 664 = 197208
Step 298: 197208 + 664 = 197872
Step 299: 197872 + 664 = 198536
Step 300: 198536 + 664 = 199200
Step 301: 199200 + 664 = 199864
Step 302: 199864 + 664 = 200528
Step 303: 200528 + 664 = 201192
Step 304: 201192 + 664 = 201856
Step 305: 201856 + 664 = 202520
Step 306: 202520 + 664 = 203184
Step 307: 203184 + 664 = 203848
Step 308: 203848 + 664 = 204512
Step 309: 204512 + 664 = 205176
Step 310: 205176 + 664 = 205840
Step 311: 205840 + 664 = 206504
Step 312: 206504 + 664 = 207168
Step 313: 207168 + 664 = 207832
Step 314: 207832 + 664 = 208496
Step 315: 208496 + 664 = 209160
Step 316: 209160 + 664 = 209824
Step 317: 209824 + 664 = 210488
Step 318: 210488 + 664 = 211152
Step 319: 211152 + 664 = 211816
Step 320: 211816 + 664 = 212480
Step 321: 212480 + 664 = 213144
Step 322: 213144 + 664 = 213808
Step 323: 213808 + 664 = 214472
Step 324: 214472 + 664 = 215136
Step 325: 215136 + 664 = 215800
Step 326: 215800 + 664 = 216464
Step 327: 216464 + 664 = 217128
Step 328: 217128 + 664 = 217792
Step 329: 217792 + 664 = 218456
Step 330: 218456 + 664 = 219120
Step 331: 219120 + 664 = 219784
Step 332: 219784 + 664 = 220448
Step 333: 220448 + 664 = 221112
Step 334: 221112 + 664 = 221776
Step 335: 221776 + 664 = 222440
Step 336: 222440 + 664 = 223104
Step 337: 223104 + 664 = 223768
Step 338: 223768 + 664 = 224432
Step 339: 224432 + 664 = 225096
Step 340: 225096 + 664 = 225760
Step 341: 225760 + 664 = 226424
Step 342: 226424 + 664 = 227088
Step 343: 227088 + 664 = 227752
Step 344: 227752 + 664 = 228416
Step 345: 228416 + 664 = 229080
Step 346: 229080 + 664 = 229744
Step 347: 229744 + 664 = 230408
Step 348: 230408 + 664 = 231072
Step 349: 231072 + 664 = 231736
Step 350: 231736 + 664 = 232400
Step 351: 232400 + 664 = 233064
Step 352: 233064 + 664 = 233728
Step 353: 233728 + 664 = 234392
Step 354: 234392 + 664 = 235056
Step 355: 235056 + 664 = 235720
Step 356: 235720 + 664 = 236384
Step 357: 236384 + 664 = 237048
Step 358: 237048 + 664 = 237712
Step 359: 237712 + 664 = 238376
Step 360: 238376 + 664 = 239040
Step 361: 239040 + 664 = 239704
Step 362: 239704 + 664 = 240368
Step 363: 240368 + 664 = 241032
Step 364: 241032 + 664 = 241696
Step 365: 241696 + 664 = 242360
Step 366: 242360 + 664 = 243024
Step 367: 243024 + 664 = 243688
Step 368: 243688 + 664 = 244352
Step 369: 244352 + 664 = 245016
Step 370: 245016 + 664 = 245680
Step 371: 245680 + 664 = 246344
Step 372: 246344 + 664 = 247008
Step 373: 247008 + 664 = 247672
Step 374: 247672 + 664 = 248336
Step 375: 248336 + 664 = 249000
Step 376: 249000 + 664 = 249664
Step 377: 249664 + 664 = 250328
Step 378: 250328 + 664 = 250992
Step 379: 250992 + 664 = 251656
Step 380: 251656 + 664 = 252320
Step 381: 252320 + 664 = 252984
Step 382: 252984 + 664 = 253648
Step 383: 253648 + 664 = 254312
Step 384: 254312 + 664 = 254976
Step 385: 254976 + 664 = 255640
Step 386: 255640 + 664 = 256304
Step 387: 256304 + 664 = 256968
Step 388: 256968 + 664 = 257632
Step 389: 257632 + 664 = 258296
Step 390: 258296 + 664 = 258960
Step 391: 258960 + 664 = 259624
Step 392: 259624 + 664 = 260288
Step 393: 260288 + 664 = 260952
Step 394: 260952 + 664 = 261616
Step 395: 261616 + 664 = 262280
Step 396: 262280 + 664 = 262944
Step 397: 262944 + 664 = 263608
Step 398: 263608 + 664 = 264272
Step 399: 264272 + 664 = 264936
Step 400: 264936 + 664 = 265600
Step 401: 265600 + 664 = 266264
Step 402: 266264 + 664 = 266928
Step 403: 266928 + 664 = 267592
Step 404: 267592 + 664 = 268256
Step 405: 268256 + 664 = 268920
Step 406: 268920 + 664 = 269584
Step 407: 269584 + 664 = 270248
Step 408: 270248 + 664 = 270912
Step 409: 270912 + 664 = 271576
Step 410: 271576 + 664 = 272240
Step 411: 272240 + 664 = 272904
Step 412: 272904 + 664 = 273568
Step 413: 273568 + 664 = 274232
Step 414: 274232 + 664 = 274896
Step 415: 274896 + 664 = 275560
Step 416: 275560 + 664 = 276224
Step 417: 276224 + 664 = 276888
Step 418: 276888 + 664 = 277552
Step 419: 277552 + 664 = 278216
Step 420: 278216 + 664 = 278880
Step 421: 278880 + 664 = 279544
Step 422: 279544 + 664 = 280208
Step 423: 280208 + 664 = 280872
Step 424: 280872 + 664 = 281536
Step 425: 281536 + 664 = 282200
Step 426: 282200 + 664 = 282864
Step 427: 282864 + 664 = 283528
Step 428: 283528 + 664 = 284192
Step 429: 284192 + 664 = 284856
Step 430: 284856 + 664 = 285520
Step 431: 285520 + 664 = 286184
Step 432: 286184 + 664 = 286848
Step 433: 286848 + 664 = 287512
Step 434: 287512 + 664 = 288176
Step 435: 288176 + 664 = 288840
Step 436: 288840 + 664 = 289504
Step 437: 289504 + 664 = 290168
Step 438: 290168 + 664 = 290832
Step 439: 290832 + 664 = 291496
Step 440: 291496 + 664 = 292160
Step 441: 292160 + 664 = 292824
Step 442: 292824 + 664 = 293488
Step 443: 293488 + 664 = 294152
Step 444: 294152 + 664 = 294816
Step 445: 294816 + 664 = 295480
Step 446: 295480 + 664 = 296144
Step 447: 296144 + 664 = 296808
Step 448: 296808 + 664 = 297472
Step 449: 297472 + 664 = 298136
Step 450: 298136 + 664 = 298800
Step 451: 298800 + 664 = 299464
Step 452: 299464 + 664 = 300128
Step 453: 300128 + 664 = 300792
Step 454: 300792 + 664 = 301456
Step 455: 301456 + 664 = 302120
Step 456: 302120 + 664 = 302784
Step 457: 302784 + 664 = 303448
Step 458: 303448 + 664 = 304112
Step 459: 304112 + 664 = 304776
Step 460: 304776 + 664 = 305440
Step 461: 305440 + 664 = 306104
Step 462: 306104 + 664 = 306768
Step 463: 306768 + 664 = 307432
Step 464: 307432 + 664 = 308096
Step 465: 308096 + 664 = 308760
Step 466: 308760 + 664 = 309424
Step 467: 309424 + 664 = 310088
Step 468: 310088 + 664 = 310752
Step 469: 310752 + 664 = 311416
Step 470: 311416 + 664 = 312080
Step 471: 312080 + 664 = 312744
Step 472: 312744 + 664 = 313408
Step 473: 313408 + 664 = 314072
Step 474: 314072 + 664 = 314736
Step 475: 314736 + 664 = 315400
Step 476: 315400 + 664 = 316064
Step 477: 316064 + 664 = 316728
Step 478: 316728 + 664 = 317392
Step 479: 317392 + 664 = 318056
Step 480: 318056 + 664 = 318720
Step 481: 318720 + 664 = 319384
Step 482: 319384 + 664 = 320048
Step 483: 320048 + 664 = 320712
Step 484: 320712 + 664 = 321376
Step 485: 321376 + 664 = 322040
Step 486: 322040 + 664 = 322704
Step 487: 322704 + 664 = 323368
Step 488: 323368 + 664 = 324032
Step 489: 324032 + 664 = 324696
Step 490: 324696 + 664 = 325360
Step 491: 325360 + 664 = 326024
Step 492: 326024 + 664 = 326688
Step 493: 326688 + 664 = 327352
Step 494: 327352 + 664 = 328016
Step 495: 328016 + 664 = 328680
Step 496: 328680 + 664 = 329344
Step 497: 329344 + 664 = 330008

So, 664*497 = 330008