Let's roll up our sleeves and solve this. We have 951 and we're going to multiply it by 171, essentially adding 951 to itself 171 times.
Step 1: 0 + 951 = 951
Step 2: 951 + 951 = 1902
Step 3: 1902 + 951 = 2853
Step 4: 2853 + 951 = 3804
Step 5: 3804 + 951 = 4755
Step 6: 4755 + 951 = 5706
Step 7: 5706 + 951 = 6657
Step 8: 6657 + 951 = 7608
Step 9: 7608 + 951 = 8559
Step 10: 8559 + 951 = 9510
Step 11: 9510 + 951 = 10461
Step 12: 10461 + 951 = 11412
Step 13: 11412 + 951 = 12363
Step 14: 12363 + 951 = 13314
Step 15: 13314 + 951 = 14265
Step 16: 14265 + 951 = 15216
Step 17: 15216 + 951 = 16167
Step 18: 16167 + 951 = 17118
Step 19: 17118 + 951 = 18069
Step 20: 18069 + 951 = 19020
Step 21: 19020 + 951 = 19971
Step 22: 19971 + 951 = 20922
Step 23: 20922 + 951 = 21873
Step 24: 21873 + 951 = 22824
Step 25: 22824 + 951 = 23775
Step 26: 23775 + 951 = 24726
Step 27: 24726 + 951 = 25677
Step 28: 25677 + 951 = 26628
Step 29: 26628 + 951 = 27579
Step 30: 27579 + 951 = 28530
Step 31: 28530 + 951 = 29481
Step 32: 29481 + 951 = 30432
Step 33: 30432 + 951 = 31383
Step 34: 31383 + 951 = 32334
Step 35: 32334 + 951 = 33285
Step 36: 33285 + 951 = 34236
Step 37: 34236 + 951 = 35187
Step 38: 35187 + 951 = 36138
Step 39: 36138 + 951 = 37089
Step 40: 37089 + 951 = 38040
Step 41: 38040 + 951 = 38991
Step 42: 38991 + 951 = 39942
Step 43: 39942 + 951 = 40893
Step 44: 40893 + 951 = 41844
Step 45: 41844 + 951 = 42795
Step 46: 42795 + 951 = 43746
Step 47: 43746 + 951 = 44697
Step 48: 44697 + 951 = 45648
Step 49: 45648 + 951 = 46599
Step 50: 46599 + 951 = 47550
Step 51: 47550 + 951 = 48501
Step 52: 48501 + 951 = 49452
Step 53: 49452 + 951 = 50403
Step 54: 50403 + 951 = 51354
Step 55: 51354 + 951 = 52305
Step 56: 52305 + 951 = 53256
Step 57: 53256 + 951 = 54207
Step 58: 54207 + 951 = 55158
Step 59: 55158 + 951 = 56109
Step 60: 56109 + 951 = 57060
Step 61: 57060 + 951 = 58011
Step 62: 58011 + 951 = 58962
Step 63: 58962 + 951 = 59913
Step 64: 59913 + 951 = 60864
Step 65: 60864 + 951 = 61815
Step 66: 61815 + 951 = 62766
Step 67: 62766 + 951 = 63717
Step 68: 63717 + 951 = 64668
Step 69: 64668 + 951 = 65619
Step 70: 65619 + 951 = 66570
Step 71: 66570 + 951 = 67521
Step 72: 67521 + 951 = 68472
Step 73: 68472 + 951 = 69423
Step 74: 69423 + 951 = 70374
Step 75: 70374 + 951 = 71325
Step 76: 71325 + 951 = 72276
Step 77: 72276 + 951 = 73227
Step 78: 73227 + 951 = 74178
Step 79: 74178 + 951 = 75129
Step 80: 75129 + 951 = 76080
Step 81: 76080 + 951 = 77031
Step 82: 77031 + 951 = 77982
Step 83: 77982 + 951 = 78933
Step 84: 78933 + 951 = 79884
Step 85: 79884 + 951 = 80835
Step 86: 80835 + 951 = 81786
Step 87: 81786 + 951 = 82737
Step 88: 82737 + 951 = 83688
Step 89: 83688 + 951 = 84639
Step 90: 84639 + 951 = 85590
Step 91: 85590 + 951 = 86541
Step 92: 86541 + 951 = 87492
Step 93: 87492 + 951 = 88443
Step 94: 88443 + 951 = 89394
Step 95: 89394 + 951 = 90345
Step 96: 90345 + 951 = 91296
Step 97: 91296 + 951 = 92247
Step 98: 92247 + 951 = 93198
Step 99: 93198 + 951 = 94149
Step 100: 94149 + 951 = 95100
Step 101: 95100 + 951 = 96051
Step 102: 96051 + 951 = 97002
Step 103: 97002 + 951 = 97953
Step 104: 97953 + 951 = 98904
Step 105: 98904 + 951 = 99855
Step 106: 99855 + 951 = 100806
Step 107: 100806 + 951 = 101757
Step 108: 101757 + 951 = 102708
Step 109: 102708 + 951 = 103659
Step 110: 103659 + 951 = 104610
Step 111: 104610 + 951 = 105561
Step 112: 105561 + 951 = 106512
Step 113: 106512 + 951 = 107463
Step 114: 107463 + 951 = 108414
Step 115: 108414 + 951 = 109365
Step 116: 109365 + 951 = 110316
Step 117: 110316 + 951 = 111267
Step 118: 111267 + 951 = 112218
Step 119: 112218 + 951 = 113169
Step 120: 113169 + 951 = 114120
Step 121: 114120 + 951 = 115071
Step 122: 115071 + 951 = 116022
Step 123: 116022 + 951 = 116973
Step 124: 116973 + 951 = 117924
Step 125: 117924 + 951 = 118875
Step 126: 118875 + 951 = 119826
Step 127: 119826 + 951 = 120777
Step 128: 120777 + 951 = 121728
Step 129: 121728 + 951 = 122679
Step 130: 122679 + 951 = 123630
Step 131: 123630 + 951 = 124581
Step 132: 124581 + 951 = 125532
Step 133: 125532 + 951 = 126483
Step 134: 126483 + 951 = 127434
Step 135: 127434 + 951 = 128385
Step 136: 128385 + 951 = 129336
Step 137: 129336 + 951 = 130287
Step 138: 130287 + 951 = 131238
Step 139: 131238 + 951 = 132189
Step 140: 132189 + 951 = 133140
Step 141: 133140 + 951 = 134091
Step 142: 134091 + 951 = 135042
Step 143: 135042 + 951 = 135993
Step 144: 135993 + 951 = 136944
Step 145: 136944 + 951 = 137895
Step 146: 137895 + 951 = 138846
Step 147: 138846 + 951 = 139797
Step 148: 139797 + 951 = 140748
Step 149: 140748 + 951 = 141699
Step 150: 141699 + 951 = 142650
Step 151: 142650 + 951 = 143601
Step 152: 143601 + 951 = 144552
Step 153: 144552 + 951 = 145503
Step 154: 145503 + 951 = 146454
Step 155: 146454 + 951 = 147405
Step 156: 147405 + 951 = 148356
Step 157: 148356 + 951 = 149307
Step 158: 149307 + 951 = 150258
Step 159: 150258 + 951 = 151209
Step 160: 151209 + 951 = 152160
Step 161: 152160 + 951 = 153111
Step 162: 153111 + 951 = 154062
Step 163: 154062 + 951 = 155013
Step 164: 155013 + 951 = 155964
Step 165: 155964 + 951 = 156915
Step 166: 156915 + 951 = 157866
Step 167: 157866 + 951 = 158817
Step 168: 158817 + 951 = 159768
Step 169: 159768 + 951 = 160719
Step 170: 160719 + 951 = 161670
Step 171: 161670 + 951 = 162621

So, 951*171 = 162621