OK, let's work through this together. We're starting with 528 and we're going to multiply it by 398, which means we add 528 to itself 398 times.
Step 1: 0 + 528 = 528
Step 2: 528 + 528 = 1056
Step 3: 1056 + 528 = 1584
Step 4: 1584 + 528 = 2112
Step 5: 2112 + 528 = 2640
Step 6: 2640 + 528 = 3168
Step 7: 3168 + 528 = 3696
Step 8: 3696 + 528 = 4224
Step 9: 4224 + 528 = 4752
Step 10: 4752 + 528 = 5280
Step 11: 5280 + 528 = 5808
Step 12: 5808 + 528 = 6336
Step 13: 6336 + 528 = 6864
Step 14: 6864 + 528 = 7392
Step 15: 7392 + 528 = 7920
Step 16: 7920 + 528 = 8448
Step 17: 8448 + 528 = 8976
Step 18: 8976 + 528 = 9504
Step 19: 9504 + 528 = 10032
Step 20: 10032 + 528 = 10560
Step 21: 10560 + 528 = 11088
Step 22: 11088 + 528 = 11616
Step 23: 11616 + 528 = 12144
Step 24: 12144 + 528 = 12672
Step 25: 12672 + 528 = 13200
Step 26: 13200 + 528 = 13728
Step 27: 13728 + 528 = 14256
Step 28: 14256 + 528 = 14784
Step 29: 14784 + 528 = 15312
Step 30: 15312 + 528 = 15840
Step 31: 15840 + 528 = 16368
Step 32: 16368 + 528 = 16896
Step 33: 16896 + 528 = 17424
Step 34: 17424 + 528 = 17952
Step 35: 17952 + 528 = 18480
Step 36: 18480 + 528 = 19008
Step 37: 19008 + 528 = 19536
Step 38: 19536 + 528 = 20064
Step 39: 20064 + 528 = 20592
Step 40: 20592 + 528 = 21120
Step 41: 21120 + 528 = 21648
Step 42: 21648 + 528 = 22176
Step 43: 22176 + 528 = 22704
Step 44: 22704 + 528 = 23232
Step 45: 23232 + 528 = 23760
Step 46: 23760 + 528 = 24288
Step 47: 24288 + 528 = 24816
Step 48: 24816 + 528 = 25344
Step 49: 25344 + 528 = 25872
Step 50: 25872 + 528 = 26400
Step 51: 26400 + 528 = 26928
Step 52: 26928 + 528 = 27456
Step 53: 27456 + 528 = 27984
Step 54: 27984 + 528 = 28512
Step 55: 28512 + 528 = 29040
Step 56: 29040 + 528 = 29568
Step 57: 29568 + 528 = 30096
Step 58: 30096 + 528 = 30624
Step 59: 30624 + 528 = 31152
Step 60: 31152 + 528 = 31680
Step 61: 31680 + 528 = 32208
Step 62: 32208 + 528 = 32736
Step 63: 32736 + 528 = 33264
Step 64: 33264 + 528 = 33792
Step 65: 33792 + 528 = 34320
Step 66: 34320 + 528 = 34848
Step 67: 34848 + 528 = 35376
Step 68: 35376 + 528 = 35904
Step 69: 35904 + 528 = 36432
Step 70: 36432 + 528 = 36960
Step 71: 36960 + 528 = 37488
Step 72: 37488 + 528 = 38016
Step 73: 38016 + 528 = 38544
Step 74: 38544 + 528 = 39072
Step 75: 39072 + 528 = 39600
Step 76: 39600 + 528 = 40128
Step 77: 40128 + 528 = 40656
Step 78: 40656 + 528 = 41184
Step 79: 41184 + 528 = 41712
Step 80: 41712 + 528 = 42240
Step 81: 42240 + 528 = 42768
Step 82: 42768 + 528 = 43296
Step 83: 43296 + 528 = 43824
Step 84: 43824 + 528 = 44352
Step 85: 44352 + 528 = 44880
Step 86: 44880 + 528 = 45408
Step 87: 45408 + 528 = 45936
Step 88: 45936 + 528 = 46464
Step 89: 46464 + 528 = 46992
Step 90: 46992 + 528 = 47520
Step 91: 47520 + 528 = 48048
Step 92: 48048 + 528 = 48576
Step 93: 48576 + 528 = 49104
Step 94: 49104 + 528 = 49632
Step 95: 49632 + 528 = 50160
Step 96: 50160 + 528 = 50688
Step 97: 50688 + 528 = 51216
Step 98: 51216 + 528 = 51744
Step 99: 51744 + 528 = 52272
Step 100: 52272 + 528 = 52800
Step 101: 52800 + 528 = 53328
Step 102: 53328 + 528 = 53856
Step 103: 53856 + 528 = 54384
Step 104: 54384 + 528 = 54912
Step 105: 54912 + 528 = 55440
Step 106: 55440 + 528 = 55968
Step 107: 55968 + 528 = 56496
Step 108: 56496 + 528 = 57024
Step 109: 57024 + 528 = 57552
Step 110: 57552 + 528 = 58080
Step 111: 58080 + 528 = 58608
Step 112: 58608 + 528 = 59136
Step 113: 59136 + 528 = 59664
Step 114: 59664 + 528 = 60192
Step 115: 60192 + 528 = 60720
Step 116: 60720 + 528 = 61248
Step 117: 61248 + 528 = 61776
Step 118: 61776 + 528 = 62304
Step 119: 62304 + 528 = 62832
Step 120: 62832 + 528 = 63360
Step 121: 63360 + 528 = 63888
Step 122: 63888 + 528 = 64416
Step 123: 64416 + 528 = 64944
Step 124: 64944 + 528 = 65472
Step 125: 65472 + 528 = 66000
Step 126: 66000 + 528 = 66528
Step 127: 66528 + 528 = 67056
Step 128: 67056 + 528 = 67584
Step 129: 67584 + 528 = 68112
Step 130: 68112 + 528 = 68640
Step 131: 68640 + 528 = 69168
Step 132: 69168 + 528 = 69696
Step 133: 69696 + 528 = 70224
Step 134: 70224 + 528 = 70752
Step 135: 70752 + 528 = 71280
Step 136: 71280 + 528 = 71808
Step 137: 71808 + 528 = 72336
Step 138: 72336 + 528 = 72864
Step 139: 72864 + 528 = 73392
Step 140: 73392 + 528 = 73920
Step 141: 73920 + 528 = 74448
Step 142: 74448 + 528 = 74976
Step 143: 74976 + 528 = 75504
Step 144: 75504 + 528 = 76032
Step 145: 76032 + 528 = 76560
Step 146: 76560 + 528 = 77088
Step 147: 77088 + 528 = 77616
Step 148: 77616 + 528 = 78144
Step 149: 78144 + 528 = 78672
Step 150: 78672 + 528 = 79200
Step 151: 79200 + 528 = 79728
Step 152: 79728 + 528 = 80256
Step 153: 80256 + 528 = 80784
Step 154: 80784 + 528 = 81312
Step 155: 81312 + 528 = 81840
Step 156: 81840 + 528 = 82368
Step 157: 82368 + 528 = 82896
Step 158: 82896 + 528 = 83424
Step 159: 83424 + 528 = 83952
Step 160: 83952 + 528 = 84480
Step 161: 84480 + 528 = 85008
Step 162: 85008 + 528 = 85536
Step 163: 85536 + 528 = 86064
Step 164: 86064 + 528 = 86592
Step 165: 86592 + 528 = 87120
Step 166: 87120 + 528 = 87648
Step 167: 87648 + 528 = 88176
Step 168: 88176 + 528 = 88704
Step 169: 88704 + 528 = 89232
Step 170: 89232 + 528 = 89760
Step 171: 89760 + 528 = 90288
Step 172: 90288 + 528 = 90816
Step 173: 90816 + 528 = 91344
Step 174: 91344 + 528 = 91872
Step 175: 91872 + 528 = 92400
Step 176: 92400 + 528 = 92928
Step 177: 92928 + 528 = 93456
Step 178: 93456 + 528 = 93984
Step 179: 93984 + 528 = 94512
Step 180: 94512 + 528 = 95040
Step 181: 95040 + 528 = 95568
Step 182: 95568 + 528 = 96096
Step 183: 96096 + 528 = 96624
Step 184: 96624 + 528 = 97152
Step 185: 97152 + 528 = 97680
Step 186: 97680 + 528 = 98208
Step 187: 98208 + 528 = 98736
Step 188: 98736 + 528 = 99264
Step 189: 99264 + 528 = 99792
Step 190: 99792 + 528 = 100320
Step 191: 100320 + 528 = 100848
Step 192: 100848 + 528 = 101376
Step 193: 101376 + 528 = 101904
Step 194: 101904 + 528 = 102432
Step 195: 102432 + 528 = 102960
Step 196: 102960 + 528 = 103488
Step 197: 103488 + 528 = 104016
Step 198: 104016 + 528 = 104544
Step 199: 104544 + 528 = 105072
Step 200: 105072 + 528 = 105600
Step 201: 105600 + 528 = 106128
Step 202: 106128 + 528 = 106656
Step 203: 106656 + 528 = 107184
Step 204: 107184 + 528 = 107712
Step 205: 107712 + 528 = 108240
Step 206: 108240 + 528 = 108768
Step 207: 108768 + 528 = 109296
Step 208: 109296 + 528 = 109824
Step 209: 109824 + 528 = 110352
Step 210: 110352 + 528 = 110880
Step 211: 110880 + 528 = 111408
Step 212: 111408 + 528 = 111936
Step 213: 111936 + 528 = 112464
Step 214: 112464 + 528 = 112992
Step 215: 112992 + 528 = 113520
Step 216: 113520 + 528 = 114048
Step 217: 114048 + 528 = 114576
Step 218: 114576 + 528 = 115104
Step 219: 115104 + 528 = 115632
Step 220: 115632 + 528 = 116160
Step 221: 116160 + 528 = 116688
Step 222: 116688 + 528 = 117216
Step 223: 117216 + 528 = 117744
Step 224: 117744 + 528 = 118272
Step 225: 118272 + 528 = 118800
Step 226: 118800 + 528 = 119328
Step 227: 119328 + 528 = 119856
Step 228: 119856 + 528 = 120384
Step 229: 120384 + 528 = 120912
Step 230: 120912 + 528 = 121440
Step 231: 121440 + 528 = 121968
Step 232: 121968 + 528 = 122496
Step 233: 122496 + 528 = 123024
Step 234: 123024 + 528 = 123552
Step 235: 123552 + 528 = 124080
Step 236: 124080 + 528 = 124608
Step 237: 124608 + 528 = 125136
Step 238: 125136 + 528 = 125664
Step 239: 125664 + 528 = 126192
Step 240: 126192 + 528 = 126720
Step 241: 126720 + 528 = 127248
Step 242: 127248 + 528 = 127776
Step 243: 127776 + 528 = 128304
Step 244: 128304 + 528 = 128832
Step 245: 128832 + 528 = 129360
Step 246: 129360 + 528 = 129888
Step 247: 129888 + 528 = 130416
Step 248: 130416 + 528 = 130944
Step 249: 130944 + 528 = 131472
Step 250: 131472 + 528 = 132000
Step 251: 132000 + 528 = 132528
Step 252: 132528 + 528 = 133056
Step 253: 133056 + 528 = 133584
Step 254: 133584 + 528 = 134112
Step 255: 134112 + 528 = 134640
Step 256: 134640 + 528 = 135168
Step 257: 135168 + 528 = 135696
Step 258: 135696 + 528 = 136224
Step 259: 136224 + 528 = 136752
Step 260: 136752 + 528 = 137280
Step 261: 137280 + 528 = 137808
Step 262: 137808 + 528 = 138336
Step 263: 138336 + 528 = 138864
Step 264: 138864 + 528 = 139392
Step 265: 139392 + 528 = 139920
Step 266: 139920 + 528 = 140448
Step 267: 140448 + 528 = 140976
Step 268: 140976 + 528 = 141504
Step 269: 141504 + 528 = 142032
Step 270: 142032 + 528 = 142560
Step 271: 142560 + 528 = 143088
Step 272: 143088 + 528 = 143616
Step 273: 143616 + 528 = 144144
Step 274: 144144 + 528 = 144672
Step 275: 144672 + 528 = 145200
Step 276: 145200 + 528 = 145728
Step 277: 145728 + 528 = 146256
Step 278: 146256 + 528 = 146784
Step 279: 146784 + 528 = 147312
Step 280: 147312 + 528 = 147840
Step 281: 147840 + 528 = 148368
Step 282: 148368 + 528 = 148896
Step 283: 148896 + 528 = 149424
Step 284: 149424 + 528 = 149952
Step 285: 149952 + 528 = 150480
Step 286: 150480 + 528 = 151008
Step 287: 151008 + 528 = 151536
Step 288: 151536 + 528 = 152064
Step 289: 152064 + 528 = 152592
Step 290: 152592 + 528 = 153120
Step 291: 153120 + 528 = 153648
Step 292: 153648 + 528 = 154176
Step 293: 154176 + 528 = 154704
Step 294: 154704 + 528 = 155232
Step 295: 155232 + 528 = 155760
Step 296: 155760 + 528 = 156288
Step 297: 156288 + 528 = 156816
Step 298: 156816 + 528 = 157344
Step 299: 157344 + 528 = 157872
Step 300: 157872 + 528 = 158400
Step 301: 158400 + 528 = 158928
Step 302: 158928 + 528 = 159456
Step 303: 159456 + 528 = 159984
Step 304: 159984 + 528 = 160512
Step 305: 160512 + 528 = 161040
Step 306: 161040 + 528 = 161568
Step 307: 161568 + 528 = 162096
Step 308: 162096 + 528 = 162624
Step 309: 162624 + 528 = 163152
Step 310: 163152 + 528 = 163680
Step 311: 163680 + 528 = 164208
Step 312: 164208 + 528 = 164736
Step 313: 164736 + 528 = 165264
Step 314: 165264 + 528 = 165792
Step 315: 165792 + 528 = 166320
Step 316: 166320 + 528 = 166848
Step 317: 166848 + 528 = 167376
Step 318: 167376 + 528 = 167904
Step 319: 167904 + 528 = 168432
Step 320: 168432 + 528 = 168960
Step 321: 168960 + 528 = 169488
Step 322: 169488 + 528 = 170016
Step 323: 170016 + 528 = 170544
Step 324: 170544 + 528 = 171072
Step 325: 171072 + 528 = 171600
Step 326: 171600 + 528 = 172128
Step 327: 172128 + 528 = 172656
Step 328: 172656 + 528 = 173184
Step 329: 173184 + 528 = 173712
Step 330: 173712 + 528 = 174240
Step 331: 174240 + 528 = 174768
Step 332: 174768 + 528 = 175296
Step 333: 175296 + 528 = 175824
Step 334: 175824 + 528 = 176352
Step 335: 176352 + 528 = 176880
Step 336: 176880 + 528 = 177408
Step 337: 177408 + 528 = 177936
Step 338: 177936 + 528 = 178464
Step 339: 178464 + 528 = 178992
Step 340: 178992 + 528 = 179520
Step 341: 179520 + 528 = 180048
Step 342: 180048 + 528 = 180576
Step 343: 180576 + 528 = 181104
Step 344: 181104 + 528 = 181632
Step 345: 181632 + 528 = 182160
Step 346: 182160 + 528 = 182688
Step 347: 182688 + 528 = 183216
Step 348: 183216 + 528 = 183744
Step 349: 183744 + 528 = 184272
Step 350: 184272 + 528 = 184800
Step 351: 184800 + 528 = 185328
Step 352: 185328 + 528 = 185856
Step 353: 185856 + 528 = 186384
Step 354: 186384 + 528 = 186912
Step 355: 186912 + 528 = 187440
Step 356: 187440 + 528 = 187968
Step 357: 187968 + 528 = 188496
Step 358: 188496 + 528 = 189024
Step 359: 189024 + 528 = 189552
Step 360: 189552 + 528 = 190080
Step 361: 190080 + 528 = 190608
Step 362: 190608 + 528 = 191136
Step 363: 191136 + 528 = 191664
Step 364: 191664 + 528 = 192192
Step 365: 192192 + 528 = 192720
Step 366: 192720 + 528 = 193248
Step 367: 193248 + 528 = 193776
Step 368: 193776 + 528 = 194304
Step 369: 194304 + 528 = 194832
Step 370: 194832 + 528 = 195360
Step 371: 195360 + 528 = 195888
Step 372: 195888 + 528 = 196416
Step 373: 196416 + 528 = 196944
Step 374: 196944 + 528 = 197472
Step 375: 197472 + 528 = 198000
Step 376: 198000 + 528 = 198528
Step 377: 198528 + 528 = 199056
Step 378: 199056 + 528 = 199584
Step 379: 199584 + 528 = 200112
Step 380: 200112 + 528 = 200640
Step 381: 200640 + 528 = 201168
Step 382: 201168 + 528 = 201696
Step 383: 201696 + 528 = 202224
Step 384: 202224 + 528 = 202752
Step 385: 202752 + 528 = 203280
Step 386: 203280 + 528 = 203808
Step 387: 203808 + 528 = 204336
Step 388: 204336 + 528 = 204864
Step 389: 204864 + 528 = 205392
Step 390: 205392 + 528 = 205920
Step 391: 205920 + 528 = 206448
Step 392: 206448 + 528 = 206976
Step 393: 206976 + 528 = 207504
Step 394: 207504 + 528 = 208032
Step 395: 208032 + 528 = 208560
Step 396: 208560 + 528 = 209088
Step 397: 209088 + 528 = 209616
Step 398: 209616 + 528 = 210144

So, 528*398 = 210144