Without delay, let's solve this. We've got 647 and we will be multiplying it by 169, that is, adding 647 to itself 169 times.
Step 1: 0 + 647 = 647
Step 2: 647 + 647 = 1294
Step 3: 1294 + 647 = 1941
Step 4: 1941 + 647 = 2588
Step 5: 2588 + 647 = 3235
Step 6: 3235 + 647 = 3882
Step 7: 3882 + 647 = 4529
Step 8: 4529 + 647 = 5176
Step 9: 5176 + 647 = 5823
Step 10: 5823 + 647 = 6470
Step 11: 6470 + 647 = 7117
Step 12: 7117 + 647 = 7764
Step 13: 7764 + 647 = 8411
Step 14: 8411 + 647 = 9058
Step 15: 9058 + 647 = 9705
Step 16: 9705 + 647 = 10352
Step 17: 10352 + 647 = 10999
Step 18: 10999 + 647 = 11646
Step 19: 11646 + 647 = 12293
Step 20: 12293 + 647 = 12940
Step 21: 12940 + 647 = 13587
Step 22: 13587 + 647 = 14234
Step 23: 14234 + 647 = 14881
Step 24: 14881 + 647 = 15528
Step 25: 15528 + 647 = 16175
Step 26: 16175 + 647 = 16822
Step 27: 16822 + 647 = 17469
Step 28: 17469 + 647 = 18116
Step 29: 18116 + 647 = 18763
Step 30: 18763 + 647 = 19410
Step 31: 19410 + 647 = 20057
Step 32: 20057 + 647 = 20704
Step 33: 20704 + 647 = 21351
Step 34: 21351 + 647 = 21998
Step 35: 21998 + 647 = 22645
Step 36: 22645 + 647 = 23292
Step 37: 23292 + 647 = 23939
Step 38: 23939 + 647 = 24586
Step 39: 24586 + 647 = 25233
Step 40: 25233 + 647 = 25880
Step 41: 25880 + 647 = 26527
Step 42: 26527 + 647 = 27174
Step 43: 27174 + 647 = 27821
Step 44: 27821 + 647 = 28468
Step 45: 28468 + 647 = 29115
Step 46: 29115 + 647 = 29762
Step 47: 29762 + 647 = 30409
Step 48: 30409 + 647 = 31056
Step 49: 31056 + 647 = 31703
Step 50: 31703 + 647 = 32350
Step 51: 32350 + 647 = 32997
Step 52: 32997 + 647 = 33644
Step 53: 33644 + 647 = 34291
Step 54: 34291 + 647 = 34938
Step 55: 34938 + 647 = 35585
Step 56: 35585 + 647 = 36232
Step 57: 36232 + 647 = 36879
Step 58: 36879 + 647 = 37526
Step 59: 37526 + 647 = 38173
Step 60: 38173 + 647 = 38820
Step 61: 38820 + 647 = 39467
Step 62: 39467 + 647 = 40114
Step 63: 40114 + 647 = 40761
Step 64: 40761 + 647 = 41408
Step 65: 41408 + 647 = 42055
Step 66: 42055 + 647 = 42702
Step 67: 42702 + 647 = 43349
Step 68: 43349 + 647 = 43996
Step 69: 43996 + 647 = 44643
Step 70: 44643 + 647 = 45290
Step 71: 45290 + 647 = 45937
Step 72: 45937 + 647 = 46584
Step 73: 46584 + 647 = 47231
Step 74: 47231 + 647 = 47878
Step 75: 47878 + 647 = 48525
Step 76: 48525 + 647 = 49172
Step 77: 49172 + 647 = 49819
Step 78: 49819 + 647 = 50466
Step 79: 50466 + 647 = 51113
Step 80: 51113 + 647 = 51760
Step 81: 51760 + 647 = 52407
Step 82: 52407 + 647 = 53054
Step 83: 53054 + 647 = 53701
Step 84: 53701 + 647 = 54348
Step 85: 54348 + 647 = 54995
Step 86: 54995 + 647 = 55642
Step 87: 55642 + 647 = 56289
Step 88: 56289 + 647 = 56936
Step 89: 56936 + 647 = 57583
Step 90: 57583 + 647 = 58230
Step 91: 58230 + 647 = 58877
Step 92: 58877 + 647 = 59524
Step 93: 59524 + 647 = 60171
Step 94: 60171 + 647 = 60818
Step 95: 60818 + 647 = 61465
Step 96: 61465 + 647 = 62112
Step 97: 62112 + 647 = 62759
Step 98: 62759 + 647 = 63406
Step 99: 63406 + 647 = 64053
Step 100: 64053 + 647 = 64700
Step 101: 64700 + 647 = 65347
Step 102: 65347 + 647 = 65994
Step 103: 65994 + 647 = 66641
Step 104: 66641 + 647 = 67288
Step 105: 67288 + 647 = 67935
Step 106: 67935 + 647 = 68582
Step 107: 68582 + 647 = 69229
Step 108: 69229 + 647 = 69876
Step 109: 69876 + 647 = 70523
Step 110: 70523 + 647 = 71170
Step 111: 71170 + 647 = 71817
Step 112: 71817 + 647 = 72464
Step 113: 72464 + 647 = 73111
Step 114: 73111 + 647 = 73758
Step 115: 73758 + 647 = 74405
Step 116: 74405 + 647 = 75052
Step 117: 75052 + 647 = 75699
Step 118: 75699 + 647 = 76346
Step 119: 76346 + 647 = 76993
Step 120: 76993 + 647 = 77640
Step 121: 77640 + 647 = 78287
Step 122: 78287 + 647 = 78934
Step 123: 78934 + 647 = 79581
Step 124: 79581 + 647 = 80228
Step 125: 80228 + 647 = 80875
Step 126: 80875 + 647 = 81522
Step 127: 81522 + 647 = 82169
Step 128: 82169 + 647 = 82816
Step 129: 82816 + 647 = 83463
Step 130: 83463 + 647 = 84110
Step 131: 84110 + 647 = 84757
Step 132: 84757 + 647 = 85404
Step 133: 85404 + 647 = 86051
Step 134: 86051 + 647 = 86698
Step 135: 86698 + 647 = 87345
Step 136: 87345 + 647 = 87992
Step 137: 87992 + 647 = 88639
Step 138: 88639 + 647 = 89286
Step 139: 89286 + 647 = 89933
Step 140: 89933 + 647 = 90580
Step 141: 90580 + 647 = 91227
Step 142: 91227 + 647 = 91874
Step 143: 91874 + 647 = 92521
Step 144: 92521 + 647 = 93168
Step 145: 93168 + 647 = 93815
Step 146: 93815 + 647 = 94462
Step 147: 94462 + 647 = 95109
Step 148: 95109 + 647 = 95756
Step 149: 95756 + 647 = 96403
Step 150: 96403 + 647 = 97050
Step 151: 97050 + 647 = 97697
Step 152: 97697 + 647 = 98344
Step 153: 98344 + 647 = 98991
Step 154: 98991 + 647 = 99638
Step 155: 99638 + 647 = 100285
Step 156: 100285 + 647 = 100932
Step 157: 100932 + 647 = 101579
Step 158: 101579 + 647 = 102226
Step 159: 102226 + 647 = 102873
Step 160: 102873 + 647 = 103520
Step 161: 103520 + 647 = 104167
Step 162: 104167 + 647 = 104814
Step 163: 104814 + 647 = 105461
Step 164: 105461 + 647 = 106108
Step 165: 106108 + 647 = 106755
Step 166: 106755 + 647 = 107402
Step 167: 107402 + 647 = 108049
Step 168: 108049 + 647 = 108696
Step 169: 108696 + 647 = 109343

So, 647*169 = 109343