Let's roll up our sleeves and solve this. We have 171 and we're going to multiply it by 237, essentially adding 171 to itself 237 times.
Step 1: 0 + 171 = 171
Step 2: 171 + 171 = 342
Step 3: 342 + 171 = 513
Step 4: 513 + 171 = 684
Step 5: 684 + 171 = 855
Step 6: 855 + 171 = 1026
Step 7: 1026 + 171 = 1197
Step 8: 1197 + 171 = 1368
Step 9: 1368 + 171 = 1539
Step 10: 1539 + 171 = 1710
Step 11: 1710 + 171 = 1881
Step 12: 1881 + 171 = 2052
Step 13: 2052 + 171 = 2223
Step 14: 2223 + 171 = 2394
Step 15: 2394 + 171 = 2565
Step 16: 2565 + 171 = 2736
Step 17: 2736 + 171 = 2907
Step 18: 2907 + 171 = 3078
Step 19: 3078 + 171 = 3249
Step 20: 3249 + 171 = 3420
Step 21: 3420 + 171 = 3591
Step 22: 3591 + 171 = 3762
Step 23: 3762 + 171 = 3933
Step 24: 3933 + 171 = 4104
Step 25: 4104 + 171 = 4275
Step 26: 4275 + 171 = 4446
Step 27: 4446 + 171 = 4617
Step 28: 4617 + 171 = 4788
Step 29: 4788 + 171 = 4959
Step 30: 4959 + 171 = 5130
Step 31: 5130 + 171 = 5301
Step 32: 5301 + 171 = 5472
Step 33: 5472 + 171 = 5643
Step 34: 5643 + 171 = 5814
Step 35: 5814 + 171 = 5985
Step 36: 5985 + 171 = 6156
Step 37: 6156 + 171 = 6327
Step 38: 6327 + 171 = 6498
Step 39: 6498 + 171 = 6669
Step 40: 6669 + 171 = 6840
Step 41: 6840 + 171 = 7011
Step 42: 7011 + 171 = 7182
Step 43: 7182 + 171 = 7353
Step 44: 7353 + 171 = 7524
Step 45: 7524 + 171 = 7695
Step 46: 7695 + 171 = 7866
Step 47: 7866 + 171 = 8037
Step 48: 8037 + 171 = 8208
Step 49: 8208 + 171 = 8379
Step 50: 8379 + 171 = 8550
Step 51: 8550 + 171 = 8721
Step 52: 8721 + 171 = 8892
Step 53: 8892 + 171 = 9063
Step 54: 9063 + 171 = 9234
Step 55: 9234 + 171 = 9405
Step 56: 9405 + 171 = 9576
Step 57: 9576 + 171 = 9747
Step 58: 9747 + 171 = 9918
Step 59: 9918 + 171 = 10089
Step 60: 10089 + 171 = 10260
Step 61: 10260 + 171 = 10431
Step 62: 10431 + 171 = 10602
Step 63: 10602 + 171 = 10773
Step 64: 10773 + 171 = 10944
Step 65: 10944 + 171 = 11115
Step 66: 11115 + 171 = 11286
Step 67: 11286 + 171 = 11457
Step 68: 11457 + 171 = 11628
Step 69: 11628 + 171 = 11799
Step 70: 11799 + 171 = 11970
Step 71: 11970 + 171 = 12141
Step 72: 12141 + 171 = 12312
Step 73: 12312 + 171 = 12483
Step 74: 12483 + 171 = 12654
Step 75: 12654 + 171 = 12825
Step 76: 12825 + 171 = 12996
Step 77: 12996 + 171 = 13167
Step 78: 13167 + 171 = 13338
Step 79: 13338 + 171 = 13509
Step 80: 13509 + 171 = 13680
Step 81: 13680 + 171 = 13851
Step 82: 13851 + 171 = 14022
Step 83: 14022 + 171 = 14193
Step 84: 14193 + 171 = 14364
Step 85: 14364 + 171 = 14535
Step 86: 14535 + 171 = 14706
Step 87: 14706 + 171 = 14877
Step 88: 14877 + 171 = 15048
Step 89: 15048 + 171 = 15219
Step 90: 15219 + 171 = 15390
Step 91: 15390 + 171 = 15561
Step 92: 15561 + 171 = 15732
Step 93: 15732 + 171 = 15903
Step 94: 15903 + 171 = 16074
Step 95: 16074 + 171 = 16245
Step 96: 16245 + 171 = 16416
Step 97: 16416 + 171 = 16587
Step 98: 16587 + 171 = 16758
Step 99: 16758 + 171 = 16929
Step 100: 16929 + 171 = 17100
Step 101: 17100 + 171 = 17271
Step 102: 17271 + 171 = 17442
Step 103: 17442 + 171 = 17613
Step 104: 17613 + 171 = 17784
Step 105: 17784 + 171 = 17955
Step 106: 17955 + 171 = 18126
Step 107: 18126 + 171 = 18297
Step 108: 18297 + 171 = 18468
Step 109: 18468 + 171 = 18639
Step 110: 18639 + 171 = 18810
Step 111: 18810 + 171 = 18981
Step 112: 18981 + 171 = 19152
Step 113: 19152 + 171 = 19323
Step 114: 19323 + 171 = 19494
Step 115: 19494 + 171 = 19665
Step 116: 19665 + 171 = 19836
Step 117: 19836 + 171 = 20007
Step 118: 20007 + 171 = 20178
Step 119: 20178 + 171 = 20349
Step 120: 20349 + 171 = 20520
Step 121: 20520 + 171 = 20691
Step 122: 20691 + 171 = 20862
Step 123: 20862 + 171 = 21033
Step 124: 21033 + 171 = 21204
Step 125: 21204 + 171 = 21375
Step 126: 21375 + 171 = 21546
Step 127: 21546 + 171 = 21717
Step 128: 21717 + 171 = 21888
Step 129: 21888 + 171 = 22059
Step 130: 22059 + 171 = 22230
Step 131: 22230 + 171 = 22401
Step 132: 22401 + 171 = 22572
Step 133: 22572 + 171 = 22743
Step 134: 22743 + 171 = 22914
Step 135: 22914 + 171 = 23085
Step 136: 23085 + 171 = 23256
Step 137: 23256 + 171 = 23427
Step 138: 23427 + 171 = 23598
Step 139: 23598 + 171 = 23769
Step 140: 23769 + 171 = 23940
Step 141: 23940 + 171 = 24111
Step 142: 24111 + 171 = 24282
Step 143: 24282 + 171 = 24453
Step 144: 24453 + 171 = 24624
Step 145: 24624 + 171 = 24795
Step 146: 24795 + 171 = 24966
Step 147: 24966 + 171 = 25137
Step 148: 25137 + 171 = 25308
Step 149: 25308 + 171 = 25479
Step 150: 25479 + 171 = 25650
Step 151: 25650 + 171 = 25821
Step 152: 25821 + 171 = 25992
Step 153: 25992 + 171 = 26163
Step 154: 26163 + 171 = 26334
Step 155: 26334 + 171 = 26505
Step 156: 26505 + 171 = 26676
Step 157: 26676 + 171 = 26847
Step 158: 26847 + 171 = 27018
Step 159: 27018 + 171 = 27189
Step 160: 27189 + 171 = 27360
Step 161: 27360 + 171 = 27531
Step 162: 27531 + 171 = 27702
Step 163: 27702 + 171 = 27873
Step 164: 27873 + 171 = 28044
Step 165: 28044 + 171 = 28215
Step 166: 28215 + 171 = 28386
Step 167: 28386 + 171 = 28557
Step 168: 28557 + 171 = 28728
Step 169: 28728 + 171 = 28899
Step 170: 28899 + 171 = 29070
Step 171: 29070 + 171 = 29241
Step 172: 29241 + 171 = 29412
Step 173: 29412 + 171 = 29583
Step 174: 29583 + 171 = 29754
Step 175: 29754 + 171 = 29925
Step 176: 29925 + 171 = 30096
Step 177: 30096 + 171 = 30267
Step 178: 30267 + 171 = 30438
Step 179: 30438 + 171 = 30609
Step 180: 30609 + 171 = 30780
Step 181: 30780 + 171 = 30951
Step 182: 30951 + 171 = 31122
Step 183: 31122 + 171 = 31293
Step 184: 31293 + 171 = 31464
Step 185: 31464 + 171 = 31635
Step 186: 31635 + 171 = 31806
Step 187: 31806 + 171 = 31977
Step 188: 31977 + 171 = 32148
Step 189: 32148 + 171 = 32319
Step 190: 32319 + 171 = 32490
Step 191: 32490 + 171 = 32661
Step 192: 32661 + 171 = 32832
Step 193: 32832 + 171 = 33003
Step 194: 33003 + 171 = 33174
Step 195: 33174 + 171 = 33345
Step 196: 33345 + 171 = 33516
Step 197: 33516 + 171 = 33687
Step 198: 33687 + 171 = 33858
Step 199: 33858 + 171 = 34029
Step 200: 34029 + 171 = 34200
Step 201: 34200 + 171 = 34371
Step 202: 34371 + 171 = 34542
Step 203: 34542 + 171 = 34713
Step 204: 34713 + 171 = 34884
Step 205: 34884 + 171 = 35055
Step 206: 35055 + 171 = 35226
Step 207: 35226 + 171 = 35397
Step 208: 35397 + 171 = 35568
Step 209: 35568 + 171 = 35739
Step 210: 35739 + 171 = 35910
Step 211: 35910 + 171 = 36081
Step 212: 36081 + 171 = 36252
Step 213: 36252 + 171 = 36423
Step 214: 36423 + 171 = 36594
Step 215: 36594 + 171 = 36765
Step 216: 36765 + 171 = 36936
Step 217: 36936 + 171 = 37107
Step 218: 37107 + 171 = 37278
Step 219: 37278 + 171 = 37449
Step 220: 37449 + 171 = 37620
Step 221: 37620 + 171 = 37791
Step 222: 37791 + 171 = 37962
Step 223: 37962 + 171 = 38133
Step 224: 38133 + 171 = 38304
Step 225: 38304 + 171 = 38475
Step 226: 38475 + 171 = 38646
Step 227: 38646 + 171 = 38817
Step 228: 38817 + 171 = 38988
Step 229: 38988 + 171 = 39159
Step 230: 39159 + 171 = 39330
Step 231: 39330 + 171 = 39501
Step 232: 39501 + 171 = 39672
Step 233: 39672 + 171 = 39843
Step 234: 39843 + 171 = 40014
Step 235: 40014 + 171 = 40185
Step 236: 40185 + 171 = 40356
Step 237: 40356 + 171 = 40527

So, 171*237 = 40527