OK, let's work through this together. We're starting with 657 and we're going to multiply it by 326, which means we add 657 to itself 326 times.
Step 1: 0 + 657 = 657
Step 2: 657 + 657 = 1314
Step 3: 1314 + 657 = 1971
Step 4: 1971 + 657 = 2628
Step 5: 2628 + 657 = 3285
Step 6: 3285 + 657 = 3942
Step 7: 3942 + 657 = 4599
Step 8: 4599 + 657 = 5256
Step 9: 5256 + 657 = 5913
Step 10: 5913 + 657 = 6570
Step 11: 6570 + 657 = 7227
Step 12: 7227 + 657 = 7884
Step 13: 7884 + 657 = 8541
Step 14: 8541 + 657 = 9198
Step 15: 9198 + 657 = 9855
Step 16: 9855 + 657 = 10512
Step 17: 10512 + 657 = 11169
Step 18: 11169 + 657 = 11826
Step 19: 11826 + 657 = 12483
Step 20: 12483 + 657 = 13140
Step 21: 13140 + 657 = 13797
Step 22: 13797 + 657 = 14454
Step 23: 14454 + 657 = 15111
Step 24: 15111 + 657 = 15768
Step 25: 15768 + 657 = 16425
Step 26: 16425 + 657 = 17082
Step 27: 17082 + 657 = 17739
Step 28: 17739 + 657 = 18396
Step 29: 18396 + 657 = 19053
Step 30: 19053 + 657 = 19710
Step 31: 19710 + 657 = 20367
Step 32: 20367 + 657 = 21024
Step 33: 21024 + 657 = 21681
Step 34: 21681 + 657 = 22338
Step 35: 22338 + 657 = 22995
Step 36: 22995 + 657 = 23652
Step 37: 23652 + 657 = 24309
Step 38: 24309 + 657 = 24966
Step 39: 24966 + 657 = 25623
Step 40: 25623 + 657 = 26280
Step 41: 26280 + 657 = 26937
Step 42: 26937 + 657 = 27594
Step 43: 27594 + 657 = 28251
Step 44: 28251 + 657 = 28908
Step 45: 28908 + 657 = 29565
Step 46: 29565 + 657 = 30222
Step 47: 30222 + 657 = 30879
Step 48: 30879 + 657 = 31536
Step 49: 31536 + 657 = 32193
Step 50: 32193 + 657 = 32850
Step 51: 32850 + 657 = 33507
Step 52: 33507 + 657 = 34164
Step 53: 34164 + 657 = 34821
Step 54: 34821 + 657 = 35478
Step 55: 35478 + 657 = 36135
Step 56: 36135 + 657 = 36792
Step 57: 36792 + 657 = 37449
Step 58: 37449 + 657 = 38106
Step 59: 38106 + 657 = 38763
Step 60: 38763 + 657 = 39420
Step 61: 39420 + 657 = 40077
Step 62: 40077 + 657 = 40734
Step 63: 40734 + 657 = 41391
Step 64: 41391 + 657 = 42048
Step 65: 42048 + 657 = 42705
Step 66: 42705 + 657 = 43362
Step 67: 43362 + 657 = 44019
Step 68: 44019 + 657 = 44676
Step 69: 44676 + 657 = 45333
Step 70: 45333 + 657 = 45990
Step 71: 45990 + 657 = 46647
Step 72: 46647 + 657 = 47304
Step 73: 47304 + 657 = 47961
Step 74: 47961 + 657 = 48618
Step 75: 48618 + 657 = 49275
Step 76: 49275 + 657 = 49932
Step 77: 49932 + 657 = 50589
Step 78: 50589 + 657 = 51246
Step 79: 51246 + 657 = 51903
Step 80: 51903 + 657 = 52560
Step 81: 52560 + 657 = 53217
Step 82: 53217 + 657 = 53874
Step 83: 53874 + 657 = 54531
Step 84: 54531 + 657 = 55188
Step 85: 55188 + 657 = 55845
Step 86: 55845 + 657 = 56502
Step 87: 56502 + 657 = 57159
Step 88: 57159 + 657 = 57816
Step 89: 57816 + 657 = 58473
Step 90: 58473 + 657 = 59130
Step 91: 59130 + 657 = 59787
Step 92: 59787 + 657 = 60444
Step 93: 60444 + 657 = 61101
Step 94: 61101 + 657 = 61758
Step 95: 61758 + 657 = 62415
Step 96: 62415 + 657 = 63072
Step 97: 63072 + 657 = 63729
Step 98: 63729 + 657 = 64386
Step 99: 64386 + 657 = 65043
Step 100: 65043 + 657 = 65700
Step 101: 65700 + 657 = 66357
Step 102: 66357 + 657 = 67014
Step 103: 67014 + 657 = 67671
Step 104: 67671 + 657 = 68328
Step 105: 68328 + 657 = 68985
Step 106: 68985 + 657 = 69642
Step 107: 69642 + 657 = 70299
Step 108: 70299 + 657 = 70956
Step 109: 70956 + 657 = 71613
Step 110: 71613 + 657 = 72270
Step 111: 72270 + 657 = 72927
Step 112: 72927 + 657 = 73584
Step 113: 73584 + 657 = 74241
Step 114: 74241 + 657 = 74898
Step 115: 74898 + 657 = 75555
Step 116: 75555 + 657 = 76212
Step 117: 76212 + 657 = 76869
Step 118: 76869 + 657 = 77526
Step 119: 77526 + 657 = 78183
Step 120: 78183 + 657 = 78840
Step 121: 78840 + 657 = 79497
Step 122: 79497 + 657 = 80154
Step 123: 80154 + 657 = 80811
Step 124: 80811 + 657 = 81468
Step 125: 81468 + 657 = 82125
Step 126: 82125 + 657 = 82782
Step 127: 82782 + 657 = 83439
Step 128: 83439 + 657 = 84096
Step 129: 84096 + 657 = 84753
Step 130: 84753 + 657 = 85410
Step 131: 85410 + 657 = 86067
Step 132: 86067 + 657 = 86724
Step 133: 86724 + 657 = 87381
Step 134: 87381 + 657 = 88038
Step 135: 88038 + 657 = 88695
Step 136: 88695 + 657 = 89352
Step 137: 89352 + 657 = 90009
Step 138: 90009 + 657 = 90666
Step 139: 90666 + 657 = 91323
Step 140: 91323 + 657 = 91980
Step 141: 91980 + 657 = 92637
Step 142: 92637 + 657 = 93294
Step 143: 93294 + 657 = 93951
Step 144: 93951 + 657 = 94608
Step 145: 94608 + 657 = 95265
Step 146: 95265 + 657 = 95922
Step 147: 95922 + 657 = 96579
Step 148: 96579 + 657 = 97236
Step 149: 97236 + 657 = 97893
Step 150: 97893 + 657 = 98550
Step 151: 98550 + 657 = 99207
Step 152: 99207 + 657 = 99864
Step 153: 99864 + 657 = 100521
Step 154: 100521 + 657 = 101178
Step 155: 101178 + 657 = 101835
Step 156: 101835 + 657 = 102492
Step 157: 102492 + 657 = 103149
Step 158: 103149 + 657 = 103806
Step 159: 103806 + 657 = 104463
Step 160: 104463 + 657 = 105120
Step 161: 105120 + 657 = 105777
Step 162: 105777 + 657 = 106434
Step 163: 106434 + 657 = 107091
Step 164: 107091 + 657 = 107748
Step 165: 107748 + 657 = 108405
Step 166: 108405 + 657 = 109062
Step 167: 109062 + 657 = 109719
Step 168: 109719 + 657 = 110376
Step 169: 110376 + 657 = 111033
Step 170: 111033 + 657 = 111690
Step 171: 111690 + 657 = 112347
Step 172: 112347 + 657 = 113004
Step 173: 113004 + 657 = 113661
Step 174: 113661 + 657 = 114318
Step 175: 114318 + 657 = 114975
Step 176: 114975 + 657 = 115632
Step 177: 115632 + 657 = 116289
Step 178: 116289 + 657 = 116946
Step 179: 116946 + 657 = 117603
Step 180: 117603 + 657 = 118260
Step 181: 118260 + 657 = 118917
Step 182: 118917 + 657 = 119574
Step 183: 119574 + 657 = 120231
Step 184: 120231 + 657 = 120888
Step 185: 120888 + 657 = 121545
Step 186: 121545 + 657 = 122202
Step 187: 122202 + 657 = 122859
Step 188: 122859 + 657 = 123516
Step 189: 123516 + 657 = 124173
Step 190: 124173 + 657 = 124830
Step 191: 124830 + 657 = 125487
Step 192: 125487 + 657 = 126144
Step 193: 126144 + 657 = 126801
Step 194: 126801 + 657 = 127458
Step 195: 127458 + 657 = 128115
Step 196: 128115 + 657 = 128772
Step 197: 128772 + 657 = 129429
Step 198: 129429 + 657 = 130086
Step 199: 130086 + 657 = 130743
Step 200: 130743 + 657 = 131400
Step 201: 131400 + 657 = 132057
Step 202: 132057 + 657 = 132714
Step 203: 132714 + 657 = 133371
Step 204: 133371 + 657 = 134028
Step 205: 134028 + 657 = 134685
Step 206: 134685 + 657 = 135342
Step 207: 135342 + 657 = 135999
Step 208: 135999 + 657 = 136656
Step 209: 136656 + 657 = 137313
Step 210: 137313 + 657 = 137970
Step 211: 137970 + 657 = 138627
Step 212: 138627 + 657 = 139284
Step 213: 139284 + 657 = 139941
Step 214: 139941 + 657 = 140598
Step 215: 140598 + 657 = 141255
Step 216: 141255 + 657 = 141912
Step 217: 141912 + 657 = 142569
Step 218: 142569 + 657 = 143226
Step 219: 143226 + 657 = 143883
Step 220: 143883 + 657 = 144540
Step 221: 144540 + 657 = 145197
Step 222: 145197 + 657 = 145854
Step 223: 145854 + 657 = 146511
Step 224: 146511 + 657 = 147168
Step 225: 147168 + 657 = 147825
Step 226: 147825 + 657 = 148482
Step 227: 148482 + 657 = 149139
Step 228: 149139 + 657 = 149796
Step 229: 149796 + 657 = 150453
Step 230: 150453 + 657 = 151110
Step 231: 151110 + 657 = 151767
Step 232: 151767 + 657 = 152424
Step 233: 152424 + 657 = 153081
Step 234: 153081 + 657 = 153738
Step 235: 153738 + 657 = 154395
Step 236: 154395 + 657 = 155052
Step 237: 155052 + 657 = 155709
Step 238: 155709 + 657 = 156366
Step 239: 156366 + 657 = 157023
Step 240: 157023 + 657 = 157680
Step 241: 157680 + 657 = 158337
Step 242: 158337 + 657 = 158994
Step 243: 158994 + 657 = 159651
Step 244: 159651 + 657 = 160308
Step 245: 160308 + 657 = 160965
Step 246: 160965 + 657 = 161622
Step 247: 161622 + 657 = 162279
Step 248: 162279 + 657 = 162936
Step 249: 162936 + 657 = 163593
Step 250: 163593 + 657 = 164250
Step 251: 164250 + 657 = 164907
Step 252: 164907 + 657 = 165564
Step 253: 165564 + 657 = 166221
Step 254: 166221 + 657 = 166878
Step 255: 166878 + 657 = 167535
Step 256: 167535 + 657 = 168192
Step 257: 168192 + 657 = 168849
Step 258: 168849 + 657 = 169506
Step 259: 169506 + 657 = 170163
Step 260: 170163 + 657 = 170820
Step 261: 170820 + 657 = 171477
Step 262: 171477 + 657 = 172134
Step 263: 172134 + 657 = 172791
Step 264: 172791 + 657 = 173448
Step 265: 173448 + 657 = 174105
Step 266: 174105 + 657 = 174762
Step 267: 174762 + 657 = 175419
Step 268: 175419 + 657 = 176076
Step 269: 176076 + 657 = 176733
Step 270: 176733 + 657 = 177390
Step 271: 177390 + 657 = 178047
Step 272: 178047 + 657 = 178704
Step 273: 178704 + 657 = 179361
Step 274: 179361 + 657 = 180018
Step 275: 180018 + 657 = 180675
Step 276: 180675 + 657 = 181332
Step 277: 181332 + 657 = 181989
Step 278: 181989 + 657 = 182646
Step 279: 182646 + 657 = 183303
Step 280: 183303 + 657 = 183960
Step 281: 183960 + 657 = 184617
Step 282: 184617 + 657 = 185274
Step 283: 185274 + 657 = 185931
Step 284: 185931 + 657 = 186588
Step 285: 186588 + 657 = 187245
Step 286: 187245 + 657 = 187902
Step 287: 187902 + 657 = 188559
Step 288: 188559 + 657 = 189216
Step 289: 189216 + 657 = 189873
Step 290: 189873 + 657 = 190530
Step 291: 190530 + 657 = 191187
Step 292: 191187 + 657 = 191844
Step 293: 191844 + 657 = 192501
Step 294: 192501 + 657 = 193158
Step 295: 193158 + 657 = 193815
Step 296: 193815 + 657 = 194472
Step 297: 194472 + 657 = 195129
Step 298: 195129 + 657 = 195786
Step 299: 195786 + 657 = 196443
Step 300: 196443 + 657 = 197100
Step 301: 197100 + 657 = 197757
Step 302: 197757 + 657 = 198414
Step 303: 198414 + 657 = 199071
Step 304: 199071 + 657 = 199728
Step 305: 199728 + 657 = 200385
Step 306: 200385 + 657 = 201042
Step 307: 201042 + 657 = 201699
Step 308: 201699 + 657 = 202356
Step 309: 202356 + 657 = 203013
Step 310: 203013 + 657 = 203670
Step 311: 203670 + 657 = 204327
Step 312: 204327 + 657 = 204984
Step 313: 204984 + 657 = 205641
Step 314: 205641 + 657 = 206298
Step 315: 206298 + 657 = 206955
Step 316: 206955 + 657 = 207612
Step 317: 207612 + 657 = 208269
Step 318: 208269 + 657 = 208926
Step 319: 208926 + 657 = 209583
Step 320: 209583 + 657 = 210240
Step 321: 210240 + 657 = 210897
Step 322: 210897 + 657 = 211554
Step 323: 211554 + 657 = 212211
Step 324: 212211 + 657 = 212868
Step 325: 212868 + 657 = 213525
Step 326: 213525 + 657 = 214182

So, 657*326 = 214182