OK, let's work through this together. We're starting with 912 and we're going to multiply it by 426, which means we add 912 to itself 426 times.
Step 1: 0 + 912 = 912
Step 2: 912 + 912 = 1824
Step 3: 1824 + 912 = 2736
Step 4: 2736 + 912 = 3648
Step 5: 3648 + 912 = 4560
Step 6: 4560 + 912 = 5472
Step 7: 5472 + 912 = 6384
Step 8: 6384 + 912 = 7296
Step 9: 7296 + 912 = 8208
Step 10: 8208 + 912 = 9120
Step 11: 9120 + 912 = 10032
Step 12: 10032 + 912 = 10944
Step 13: 10944 + 912 = 11856
Step 14: 11856 + 912 = 12768
Step 15: 12768 + 912 = 13680
Step 16: 13680 + 912 = 14592
Step 17: 14592 + 912 = 15504
Step 18: 15504 + 912 = 16416
Step 19: 16416 + 912 = 17328
Step 20: 17328 + 912 = 18240
Step 21: 18240 + 912 = 19152
Step 22: 19152 + 912 = 20064
Step 23: 20064 + 912 = 20976
Step 24: 20976 + 912 = 21888
Step 25: 21888 + 912 = 22800
Step 26: 22800 + 912 = 23712
Step 27: 23712 + 912 = 24624
Step 28: 24624 + 912 = 25536
Step 29: 25536 + 912 = 26448
Step 30: 26448 + 912 = 27360
Step 31: 27360 + 912 = 28272
Step 32: 28272 + 912 = 29184
Step 33: 29184 + 912 = 30096
Step 34: 30096 + 912 = 31008
Step 35: 31008 + 912 = 31920
Step 36: 31920 + 912 = 32832
Step 37: 32832 + 912 = 33744
Step 38: 33744 + 912 = 34656
Step 39: 34656 + 912 = 35568
Step 40: 35568 + 912 = 36480
Step 41: 36480 + 912 = 37392
Step 42: 37392 + 912 = 38304
Step 43: 38304 + 912 = 39216
Step 44: 39216 + 912 = 40128
Step 45: 40128 + 912 = 41040
Step 46: 41040 + 912 = 41952
Step 47: 41952 + 912 = 42864
Step 48: 42864 + 912 = 43776
Step 49: 43776 + 912 = 44688
Step 50: 44688 + 912 = 45600
Step 51: 45600 + 912 = 46512
Step 52: 46512 + 912 = 47424
Step 53: 47424 + 912 = 48336
Step 54: 48336 + 912 = 49248
Step 55: 49248 + 912 = 50160
Step 56: 50160 + 912 = 51072
Step 57: 51072 + 912 = 51984
Step 58: 51984 + 912 = 52896
Step 59: 52896 + 912 = 53808
Step 60: 53808 + 912 = 54720
Step 61: 54720 + 912 = 55632
Step 62: 55632 + 912 = 56544
Step 63: 56544 + 912 = 57456
Step 64: 57456 + 912 = 58368
Step 65: 58368 + 912 = 59280
Step 66: 59280 + 912 = 60192
Step 67: 60192 + 912 = 61104
Step 68: 61104 + 912 = 62016
Step 69: 62016 + 912 = 62928
Step 70: 62928 + 912 = 63840
Step 71: 63840 + 912 = 64752
Step 72: 64752 + 912 = 65664
Step 73: 65664 + 912 = 66576
Step 74: 66576 + 912 = 67488
Step 75: 67488 + 912 = 68400
Step 76: 68400 + 912 = 69312
Step 77: 69312 + 912 = 70224
Step 78: 70224 + 912 = 71136
Step 79: 71136 + 912 = 72048
Step 80: 72048 + 912 = 72960
Step 81: 72960 + 912 = 73872
Step 82: 73872 + 912 = 74784
Step 83: 74784 + 912 = 75696
Step 84: 75696 + 912 = 76608
Step 85: 76608 + 912 = 77520
Step 86: 77520 + 912 = 78432
Step 87: 78432 + 912 = 79344
Step 88: 79344 + 912 = 80256
Step 89: 80256 + 912 = 81168
Step 90: 81168 + 912 = 82080
Step 91: 82080 + 912 = 82992
Step 92: 82992 + 912 = 83904
Step 93: 83904 + 912 = 84816
Step 94: 84816 + 912 = 85728
Step 95: 85728 + 912 = 86640
Step 96: 86640 + 912 = 87552
Step 97: 87552 + 912 = 88464
Step 98: 88464 + 912 = 89376
Step 99: 89376 + 912 = 90288
Step 100: 90288 + 912 = 91200
Step 101: 91200 + 912 = 92112
Step 102: 92112 + 912 = 93024
Step 103: 93024 + 912 = 93936
Step 104: 93936 + 912 = 94848
Step 105: 94848 + 912 = 95760
Step 106: 95760 + 912 = 96672
Step 107: 96672 + 912 = 97584
Step 108: 97584 + 912 = 98496
Step 109: 98496 + 912 = 99408
Step 110: 99408 + 912 = 100320
Step 111: 100320 + 912 = 101232
Step 112: 101232 + 912 = 102144
Step 113: 102144 + 912 = 103056
Step 114: 103056 + 912 = 103968
Step 115: 103968 + 912 = 104880
Step 116: 104880 + 912 = 105792
Step 117: 105792 + 912 = 106704
Step 118: 106704 + 912 = 107616
Step 119: 107616 + 912 = 108528
Step 120: 108528 + 912 = 109440
Step 121: 109440 + 912 = 110352
Step 122: 110352 + 912 = 111264
Step 123: 111264 + 912 = 112176
Step 124: 112176 + 912 = 113088
Step 125: 113088 + 912 = 114000
Step 126: 114000 + 912 = 114912
Step 127: 114912 + 912 = 115824
Step 128: 115824 + 912 = 116736
Step 129: 116736 + 912 = 117648
Step 130: 117648 + 912 = 118560
Step 131: 118560 + 912 = 119472
Step 132: 119472 + 912 = 120384
Step 133: 120384 + 912 = 121296
Step 134: 121296 + 912 = 122208
Step 135: 122208 + 912 = 123120
Step 136: 123120 + 912 = 124032
Step 137: 124032 + 912 = 124944
Step 138: 124944 + 912 = 125856
Step 139: 125856 + 912 = 126768
Step 140: 126768 + 912 = 127680
Step 141: 127680 + 912 = 128592
Step 142: 128592 + 912 = 129504
Step 143: 129504 + 912 = 130416
Step 144: 130416 + 912 = 131328
Step 145: 131328 + 912 = 132240
Step 146: 132240 + 912 = 133152
Step 147: 133152 + 912 = 134064
Step 148: 134064 + 912 = 134976
Step 149: 134976 + 912 = 135888
Step 150: 135888 + 912 = 136800
Step 151: 136800 + 912 = 137712
Step 152: 137712 + 912 = 138624
Step 153: 138624 + 912 = 139536
Step 154: 139536 + 912 = 140448
Step 155: 140448 + 912 = 141360
Step 156: 141360 + 912 = 142272
Step 157: 142272 + 912 = 143184
Step 158: 143184 + 912 = 144096
Step 159: 144096 + 912 = 145008
Step 160: 145008 + 912 = 145920
Step 161: 145920 + 912 = 146832
Step 162: 146832 + 912 = 147744
Step 163: 147744 + 912 = 148656
Step 164: 148656 + 912 = 149568
Step 165: 149568 + 912 = 150480
Step 166: 150480 + 912 = 151392
Step 167: 151392 + 912 = 152304
Step 168: 152304 + 912 = 153216
Step 169: 153216 + 912 = 154128
Step 170: 154128 + 912 = 155040
Step 171: 155040 + 912 = 155952
Step 172: 155952 + 912 = 156864
Step 173: 156864 + 912 = 157776
Step 174: 157776 + 912 = 158688
Step 175: 158688 + 912 = 159600
Step 176: 159600 + 912 = 160512
Step 177: 160512 + 912 = 161424
Step 178: 161424 + 912 = 162336
Step 179: 162336 + 912 = 163248
Step 180: 163248 + 912 = 164160
Step 181: 164160 + 912 = 165072
Step 182: 165072 + 912 = 165984
Step 183: 165984 + 912 = 166896
Step 184: 166896 + 912 = 167808
Step 185: 167808 + 912 = 168720
Step 186: 168720 + 912 = 169632
Step 187: 169632 + 912 = 170544
Step 188: 170544 + 912 = 171456
Step 189: 171456 + 912 = 172368
Step 190: 172368 + 912 = 173280
Step 191: 173280 + 912 = 174192
Step 192: 174192 + 912 = 175104
Step 193: 175104 + 912 = 176016
Step 194: 176016 + 912 = 176928
Step 195: 176928 + 912 = 177840
Step 196: 177840 + 912 = 178752
Step 197: 178752 + 912 = 179664
Step 198: 179664 + 912 = 180576
Step 199: 180576 + 912 = 181488
Step 200: 181488 + 912 = 182400
Step 201: 182400 + 912 = 183312
Step 202: 183312 + 912 = 184224
Step 203: 184224 + 912 = 185136
Step 204: 185136 + 912 = 186048
Step 205: 186048 + 912 = 186960
Step 206: 186960 + 912 = 187872
Step 207: 187872 + 912 = 188784
Step 208: 188784 + 912 = 189696
Step 209: 189696 + 912 = 190608
Step 210: 190608 + 912 = 191520
Step 211: 191520 + 912 = 192432
Step 212: 192432 + 912 = 193344
Step 213: 193344 + 912 = 194256
Step 214: 194256 + 912 = 195168
Step 215: 195168 + 912 = 196080
Step 216: 196080 + 912 = 196992
Step 217: 196992 + 912 = 197904
Step 218: 197904 + 912 = 198816
Step 219: 198816 + 912 = 199728
Step 220: 199728 + 912 = 200640
Step 221: 200640 + 912 = 201552
Step 222: 201552 + 912 = 202464
Step 223: 202464 + 912 = 203376
Step 224: 203376 + 912 = 204288
Step 225: 204288 + 912 = 205200
Step 226: 205200 + 912 = 206112
Step 227: 206112 + 912 = 207024
Step 228: 207024 + 912 = 207936
Step 229: 207936 + 912 = 208848
Step 230: 208848 + 912 = 209760
Step 231: 209760 + 912 = 210672
Step 232: 210672 + 912 = 211584
Step 233: 211584 + 912 = 212496
Step 234: 212496 + 912 = 213408
Step 235: 213408 + 912 = 214320
Step 236: 214320 + 912 = 215232
Step 237: 215232 + 912 = 216144
Step 238: 216144 + 912 = 217056
Step 239: 217056 + 912 = 217968
Step 240: 217968 + 912 = 218880
Step 241: 218880 + 912 = 219792
Step 242: 219792 + 912 = 220704
Step 243: 220704 + 912 = 221616
Step 244: 221616 + 912 = 222528
Step 245: 222528 + 912 = 223440
Step 246: 223440 + 912 = 224352
Step 247: 224352 + 912 = 225264
Step 248: 225264 + 912 = 226176
Step 249: 226176 + 912 = 227088
Step 250: 227088 + 912 = 228000
Step 251: 228000 + 912 = 228912
Step 252: 228912 + 912 = 229824
Step 253: 229824 + 912 = 230736
Step 254: 230736 + 912 = 231648
Step 255: 231648 + 912 = 232560
Step 256: 232560 + 912 = 233472
Step 257: 233472 + 912 = 234384
Step 258: 234384 + 912 = 235296
Step 259: 235296 + 912 = 236208
Step 260: 236208 + 912 = 237120
Step 261: 237120 + 912 = 238032
Step 262: 238032 + 912 = 238944
Step 263: 238944 + 912 = 239856
Step 264: 239856 + 912 = 240768
Step 265: 240768 + 912 = 241680
Step 266: 241680 + 912 = 242592
Step 267: 242592 + 912 = 243504
Step 268: 243504 + 912 = 244416
Step 269: 244416 + 912 = 245328
Step 270: 245328 + 912 = 246240
Step 271: 246240 + 912 = 247152
Step 272: 247152 + 912 = 248064
Step 273: 248064 + 912 = 248976
Step 274: 248976 + 912 = 249888
Step 275: 249888 + 912 = 250800
Step 276: 250800 + 912 = 251712
Step 277: 251712 + 912 = 252624
Step 278: 252624 + 912 = 253536
Step 279: 253536 + 912 = 254448
Step 280: 254448 + 912 = 255360
Step 281: 255360 + 912 = 256272
Step 282: 256272 + 912 = 257184
Step 283: 257184 + 912 = 258096
Step 284: 258096 + 912 = 259008
Step 285: 259008 + 912 = 259920
Step 286: 259920 + 912 = 260832
Step 287: 260832 + 912 = 261744
Step 288: 261744 + 912 = 262656
Step 289: 262656 + 912 = 263568
Step 290: 263568 + 912 = 264480
Step 291: 264480 + 912 = 265392
Step 292: 265392 + 912 = 266304
Step 293: 266304 + 912 = 267216
Step 294: 267216 + 912 = 268128
Step 295: 268128 + 912 = 269040
Step 296: 269040 + 912 = 269952
Step 297: 269952 + 912 = 270864
Step 298: 270864 + 912 = 271776
Step 299: 271776 + 912 = 272688
Step 300: 272688 + 912 = 273600
Step 301: 273600 + 912 = 274512
Step 302: 274512 + 912 = 275424
Step 303: 275424 + 912 = 276336
Step 304: 276336 + 912 = 277248
Step 305: 277248 + 912 = 278160
Step 306: 278160 + 912 = 279072
Step 307: 279072 + 912 = 279984
Step 308: 279984 + 912 = 280896
Step 309: 280896 + 912 = 281808
Step 310: 281808 + 912 = 282720
Step 311: 282720 + 912 = 283632
Step 312: 283632 + 912 = 284544
Step 313: 284544 + 912 = 285456
Step 314: 285456 + 912 = 286368
Step 315: 286368 + 912 = 287280
Step 316: 287280 + 912 = 288192
Step 317: 288192 + 912 = 289104
Step 318: 289104 + 912 = 290016
Step 319: 290016 + 912 = 290928
Step 320: 290928 + 912 = 291840
Step 321: 291840 + 912 = 292752
Step 322: 292752 + 912 = 293664
Step 323: 293664 + 912 = 294576
Step 324: 294576 + 912 = 295488
Step 325: 295488 + 912 = 296400
Step 326: 296400 + 912 = 297312
Step 327: 297312 + 912 = 298224
Step 328: 298224 + 912 = 299136
Step 329: 299136 + 912 = 300048
Step 330: 300048 + 912 = 300960
Step 331: 300960 + 912 = 301872
Step 332: 301872 + 912 = 302784
Step 333: 302784 + 912 = 303696
Step 334: 303696 + 912 = 304608
Step 335: 304608 + 912 = 305520
Step 336: 305520 + 912 = 306432
Step 337: 306432 + 912 = 307344
Step 338: 307344 + 912 = 308256
Step 339: 308256 + 912 = 309168
Step 340: 309168 + 912 = 310080
Step 341: 310080 + 912 = 310992
Step 342: 310992 + 912 = 311904
Step 343: 311904 + 912 = 312816
Step 344: 312816 + 912 = 313728
Step 345: 313728 + 912 = 314640
Step 346: 314640 + 912 = 315552
Step 347: 315552 + 912 = 316464
Step 348: 316464 + 912 = 317376
Step 349: 317376 + 912 = 318288
Step 350: 318288 + 912 = 319200
Step 351: 319200 + 912 = 320112
Step 352: 320112 + 912 = 321024
Step 353: 321024 + 912 = 321936
Step 354: 321936 + 912 = 322848
Step 355: 322848 + 912 = 323760
Step 356: 323760 + 912 = 324672
Step 357: 324672 + 912 = 325584
Step 358: 325584 + 912 = 326496
Step 359: 326496 + 912 = 327408
Step 360: 327408 + 912 = 328320
Step 361: 328320 + 912 = 329232
Step 362: 329232 + 912 = 330144
Step 363: 330144 + 912 = 331056
Step 364: 331056 + 912 = 331968
Step 365: 331968 + 912 = 332880
Step 366: 332880 + 912 = 333792
Step 367: 333792 + 912 = 334704
Step 368: 334704 + 912 = 335616
Step 369: 335616 + 912 = 336528
Step 370: 336528 + 912 = 337440
Step 371: 337440 + 912 = 338352
Step 372: 338352 + 912 = 339264
Step 373: 339264 + 912 = 340176
Step 374: 340176 + 912 = 341088
Step 375: 341088 + 912 = 342000
Step 376: 342000 + 912 = 342912
Step 377: 342912 + 912 = 343824
Step 378: 343824 + 912 = 344736
Step 379: 344736 + 912 = 345648
Step 380: 345648 + 912 = 346560
Step 381: 346560 + 912 = 347472
Step 382: 347472 + 912 = 348384
Step 383: 348384 + 912 = 349296
Step 384: 349296 + 912 = 350208
Step 385: 350208 + 912 = 351120
Step 386: 351120 + 912 = 352032
Step 387: 352032 + 912 = 352944
Step 388: 352944 + 912 = 353856
Step 389: 353856 + 912 = 354768
Step 390: 354768 + 912 = 355680
Step 391: 355680 + 912 = 356592
Step 392: 356592 + 912 = 357504
Step 393: 357504 + 912 = 358416
Step 394: 358416 + 912 = 359328
Step 395: 359328 + 912 = 360240
Step 396: 360240 + 912 = 361152
Step 397: 361152 + 912 = 362064
Step 398: 362064 + 912 = 362976
Step 399: 362976 + 912 = 363888
Step 400: 363888 + 912 = 364800
Step 401: 364800 + 912 = 365712
Step 402: 365712 + 912 = 366624
Step 403: 366624 + 912 = 367536
Step 404: 367536 + 912 = 368448
Step 405: 368448 + 912 = 369360
Step 406: 369360 + 912 = 370272
Step 407: 370272 + 912 = 371184
Step 408: 371184 + 912 = 372096
Step 409: 372096 + 912 = 373008
Step 410: 373008 + 912 = 373920
Step 411: 373920 + 912 = 374832
Step 412: 374832 + 912 = 375744
Step 413: 375744 + 912 = 376656
Step 414: 376656 + 912 = 377568
Step 415: 377568 + 912 = 378480
Step 416: 378480 + 912 = 379392
Step 417: 379392 + 912 = 380304
Step 418: 380304 + 912 = 381216
Step 419: 381216 + 912 = 382128
Step 420: 382128 + 912 = 383040
Step 421: 383040 + 912 = 383952
Step 422: 383952 + 912 = 384864
Step 423: 384864 + 912 = 385776
Step 424: 385776 + 912 = 386688
Step 425: 386688 + 912 = 387600
Step 426: 387600 + 912 = 388512

So, 912*426 = 388512