Let's get this math done. We have 51 and we're going to multiply it by 163. This is the same as taking 51 and adding it to itself 163 times.
Step 1: 0 + 51 = 51
Step 2: 51 + 51 = 102
Step 3: 102 + 51 = 153
Step 4: 153 + 51 = 204
Step 5: 204 + 51 = 255
Step 6: 255 + 51 = 306
Step 7: 306 + 51 = 357
Step 8: 357 + 51 = 408
Step 9: 408 + 51 = 459
Step 10: 459 + 51 = 510
Step 11: 510 + 51 = 561
Step 12: 561 + 51 = 612
Step 13: 612 + 51 = 663
Step 14: 663 + 51 = 714
Step 15: 714 + 51 = 765
Step 16: 765 + 51 = 816
Step 17: 816 + 51 = 867
Step 18: 867 + 51 = 918
Step 19: 918 + 51 = 969
Step 20: 969 + 51 = 1020
Step 21: 1020 + 51 = 1071
Step 22: 1071 + 51 = 1122
Step 23: 1122 + 51 = 1173
Step 24: 1173 + 51 = 1224
Step 25: 1224 + 51 = 1275
Step 26: 1275 + 51 = 1326
Step 27: 1326 + 51 = 1377
Step 28: 1377 + 51 = 1428
Step 29: 1428 + 51 = 1479
Step 30: 1479 + 51 = 1530
Step 31: 1530 + 51 = 1581
Step 32: 1581 + 51 = 1632
Step 33: 1632 + 51 = 1683
Step 34: 1683 + 51 = 1734
Step 35: 1734 + 51 = 1785
Step 36: 1785 + 51 = 1836
Step 37: 1836 + 51 = 1887
Step 38: 1887 + 51 = 1938
Step 39: 1938 + 51 = 1989
Step 40: 1989 + 51 = 2040
Step 41: 2040 + 51 = 2091
Step 42: 2091 + 51 = 2142
Step 43: 2142 + 51 = 2193
Step 44: 2193 + 51 = 2244
Step 45: 2244 + 51 = 2295
Step 46: 2295 + 51 = 2346
Step 47: 2346 + 51 = 2397
Step 48: 2397 + 51 = 2448
Step 49: 2448 + 51 = 2499
Step 50: 2499 + 51 = 2550
Step 51: 2550 + 51 = 2601
Step 52: 2601 + 51 = 2652
Step 53: 2652 + 51 = 2703
Step 54: 2703 + 51 = 2754
Step 55: 2754 + 51 = 2805
Step 56: 2805 + 51 = 2856
Step 57: 2856 + 51 = 2907
Step 58: 2907 + 51 = 2958
Step 59: 2958 + 51 = 3009
Step 60: 3009 + 51 = 3060
Step 61: 3060 + 51 = 3111
Step 62: 3111 + 51 = 3162
Step 63: 3162 + 51 = 3213
Step 64: 3213 + 51 = 3264
Step 65: 3264 + 51 = 3315
Step 66: 3315 + 51 = 3366
Step 67: 3366 + 51 = 3417
Step 68: 3417 + 51 = 3468
Step 69: 3468 + 51 = 3519
Step 70: 3519 + 51 = 3570
Step 71: 3570 + 51 = 3621
Step 72: 3621 + 51 = 3672
Step 73: 3672 + 51 = 3723
Step 74: 3723 + 51 = 3774
Step 75: 3774 + 51 = 3825
Step 76: 3825 + 51 = 3876
Step 77: 3876 + 51 = 3927
Step 78: 3927 + 51 = 3978
Step 79: 3978 + 51 = 4029
Step 80: 4029 + 51 = 4080
Step 81: 4080 + 51 = 4131
Step 82: 4131 + 51 = 4182
Step 83: 4182 + 51 = 4233
Step 84: 4233 + 51 = 4284
Step 85: 4284 + 51 = 4335
Step 86: 4335 + 51 = 4386
Step 87: 4386 + 51 = 4437
Step 88: 4437 + 51 = 4488
Step 89: 4488 + 51 = 4539
Step 90: 4539 + 51 = 4590
Step 91: 4590 + 51 = 4641
Step 92: 4641 + 51 = 4692
Step 93: 4692 + 51 = 4743
Step 94: 4743 + 51 = 4794
Step 95: 4794 + 51 = 4845
Step 96: 4845 + 51 = 4896
Step 97: 4896 + 51 = 4947
Step 98: 4947 + 51 = 4998
Step 99: 4998 + 51 = 5049
Step 100: 5049 + 51 = 5100
Step 101: 5100 + 51 = 5151
Step 102: 5151 + 51 = 5202
Step 103: 5202 + 51 = 5253
Step 104: 5253 + 51 = 5304
Step 105: 5304 + 51 = 5355
Step 106: 5355 + 51 = 5406
Step 107: 5406 + 51 = 5457
Step 108: 5457 + 51 = 5508
Step 109: 5508 + 51 = 5559
Step 110: 5559 + 51 = 5610
Step 111: 5610 + 51 = 5661
Step 112: 5661 + 51 = 5712
Step 113: 5712 + 51 = 5763
Step 114: 5763 + 51 = 5814
Step 115: 5814 + 51 = 5865
Step 116: 5865 + 51 = 5916
Step 117: 5916 + 51 = 5967
Step 118: 5967 + 51 = 6018
Step 119: 6018 + 51 = 6069
Step 120: 6069 + 51 = 6120
Step 121: 6120 + 51 = 6171
Step 122: 6171 + 51 = 6222
Step 123: 6222 + 51 = 6273
Step 124: 6273 + 51 = 6324
Step 125: 6324 + 51 = 6375
Step 126: 6375 + 51 = 6426
Step 127: 6426 + 51 = 6477
Step 128: 6477 + 51 = 6528
Step 129: 6528 + 51 = 6579
Step 130: 6579 + 51 = 6630
Step 131: 6630 + 51 = 6681
Step 132: 6681 + 51 = 6732
Step 133: 6732 + 51 = 6783
Step 134: 6783 + 51 = 6834
Step 135: 6834 + 51 = 6885
Step 136: 6885 + 51 = 6936
Step 137: 6936 + 51 = 6987
Step 138: 6987 + 51 = 7038
Step 139: 7038 + 51 = 7089
Step 140: 7089 + 51 = 7140
Step 141: 7140 + 51 = 7191
Step 142: 7191 + 51 = 7242
Step 143: 7242 + 51 = 7293
Step 144: 7293 + 51 = 7344
Step 145: 7344 + 51 = 7395
Step 146: 7395 + 51 = 7446
Step 147: 7446 + 51 = 7497
Step 148: 7497 + 51 = 7548
Step 149: 7548 + 51 = 7599
Step 150: 7599 + 51 = 7650
Step 151: 7650 + 51 = 7701
Step 152: 7701 + 51 = 7752
Step 153: 7752 + 51 = 7803
Step 154: 7803 + 51 = 7854
Step 155: 7854 + 51 = 7905
Step 156: 7905 + 51 = 7956
Step 157: 7956 + 51 = 8007
Step 158: 8007 + 51 = 8058
Step 159: 8058 + 51 = 8109
Step 160: 8109 + 51 = 8160
Step 161: 8160 + 51 = 8211
Step 162: 8211 + 51 = 8262
Step 163: 8262 + 51 = 8313

So, 51*163 = 8313