OK, let's work through this together. We're starting with 711 and we're going to multiply it by 173, which means we add 711 to itself 173 times.
Step 1: 0 + 711 = 711
Step 2: 711 + 711 = 1422
Step 3: 1422 + 711 = 2133
Step 4: 2133 + 711 = 2844
Step 5: 2844 + 711 = 3555
Step 6: 3555 + 711 = 4266
Step 7: 4266 + 711 = 4977
Step 8: 4977 + 711 = 5688
Step 9: 5688 + 711 = 6399
Step 10: 6399 + 711 = 7110
Step 11: 7110 + 711 = 7821
Step 12: 7821 + 711 = 8532
Step 13: 8532 + 711 = 9243
Step 14: 9243 + 711 = 9954
Step 15: 9954 + 711 = 10665
Step 16: 10665 + 711 = 11376
Step 17: 11376 + 711 = 12087
Step 18: 12087 + 711 = 12798
Step 19: 12798 + 711 = 13509
Step 20: 13509 + 711 = 14220
Step 21: 14220 + 711 = 14931
Step 22: 14931 + 711 = 15642
Step 23: 15642 + 711 = 16353
Step 24: 16353 + 711 = 17064
Step 25: 17064 + 711 = 17775
Step 26: 17775 + 711 = 18486
Step 27: 18486 + 711 = 19197
Step 28: 19197 + 711 = 19908
Step 29: 19908 + 711 = 20619
Step 30: 20619 + 711 = 21330
Step 31: 21330 + 711 = 22041
Step 32: 22041 + 711 = 22752
Step 33: 22752 + 711 = 23463
Step 34: 23463 + 711 = 24174
Step 35: 24174 + 711 = 24885
Step 36: 24885 + 711 = 25596
Step 37: 25596 + 711 = 26307
Step 38: 26307 + 711 = 27018
Step 39: 27018 + 711 = 27729
Step 40: 27729 + 711 = 28440
Step 41: 28440 + 711 = 29151
Step 42: 29151 + 711 = 29862
Step 43: 29862 + 711 = 30573
Step 44: 30573 + 711 = 31284
Step 45: 31284 + 711 = 31995
Step 46: 31995 + 711 = 32706
Step 47: 32706 + 711 = 33417
Step 48: 33417 + 711 = 34128
Step 49: 34128 + 711 = 34839
Step 50: 34839 + 711 = 35550
Step 51: 35550 + 711 = 36261
Step 52: 36261 + 711 = 36972
Step 53: 36972 + 711 = 37683
Step 54: 37683 + 711 = 38394
Step 55: 38394 + 711 = 39105
Step 56: 39105 + 711 = 39816
Step 57: 39816 + 711 = 40527
Step 58: 40527 + 711 = 41238
Step 59: 41238 + 711 = 41949
Step 60: 41949 + 711 = 42660
Step 61: 42660 + 711 = 43371
Step 62: 43371 + 711 = 44082
Step 63: 44082 + 711 = 44793
Step 64: 44793 + 711 = 45504
Step 65: 45504 + 711 = 46215
Step 66: 46215 + 711 = 46926
Step 67: 46926 + 711 = 47637
Step 68: 47637 + 711 = 48348
Step 69: 48348 + 711 = 49059
Step 70: 49059 + 711 = 49770
Step 71: 49770 + 711 = 50481
Step 72: 50481 + 711 = 51192
Step 73: 51192 + 711 = 51903
Step 74: 51903 + 711 = 52614
Step 75: 52614 + 711 = 53325
Step 76: 53325 + 711 = 54036
Step 77: 54036 + 711 = 54747
Step 78: 54747 + 711 = 55458
Step 79: 55458 + 711 = 56169
Step 80: 56169 + 711 = 56880
Step 81: 56880 + 711 = 57591
Step 82: 57591 + 711 = 58302
Step 83: 58302 + 711 = 59013
Step 84: 59013 + 711 = 59724
Step 85: 59724 + 711 = 60435
Step 86: 60435 + 711 = 61146
Step 87: 61146 + 711 = 61857
Step 88: 61857 + 711 = 62568
Step 89: 62568 + 711 = 63279
Step 90: 63279 + 711 = 63990
Step 91: 63990 + 711 = 64701
Step 92: 64701 + 711 = 65412
Step 93: 65412 + 711 = 66123
Step 94: 66123 + 711 = 66834
Step 95: 66834 + 711 = 67545
Step 96: 67545 + 711 = 68256
Step 97: 68256 + 711 = 68967
Step 98: 68967 + 711 = 69678
Step 99: 69678 + 711 = 70389
Step 100: 70389 + 711 = 71100
Step 101: 71100 + 711 = 71811
Step 102: 71811 + 711 = 72522
Step 103: 72522 + 711 = 73233
Step 104: 73233 + 711 = 73944
Step 105: 73944 + 711 = 74655
Step 106: 74655 + 711 = 75366
Step 107: 75366 + 711 = 76077
Step 108: 76077 + 711 = 76788
Step 109: 76788 + 711 = 77499
Step 110: 77499 + 711 = 78210
Step 111: 78210 + 711 = 78921
Step 112: 78921 + 711 = 79632
Step 113: 79632 + 711 = 80343
Step 114: 80343 + 711 = 81054
Step 115: 81054 + 711 = 81765
Step 116: 81765 + 711 = 82476
Step 117: 82476 + 711 = 83187
Step 118: 83187 + 711 = 83898
Step 119: 83898 + 711 = 84609
Step 120: 84609 + 711 = 85320
Step 121: 85320 + 711 = 86031
Step 122: 86031 + 711 = 86742
Step 123: 86742 + 711 = 87453
Step 124: 87453 + 711 = 88164
Step 125: 88164 + 711 = 88875
Step 126: 88875 + 711 = 89586
Step 127: 89586 + 711 = 90297
Step 128: 90297 + 711 = 91008
Step 129: 91008 + 711 = 91719
Step 130: 91719 + 711 = 92430
Step 131: 92430 + 711 = 93141
Step 132: 93141 + 711 = 93852
Step 133: 93852 + 711 = 94563
Step 134: 94563 + 711 = 95274
Step 135: 95274 + 711 = 95985
Step 136: 95985 + 711 = 96696
Step 137: 96696 + 711 = 97407
Step 138: 97407 + 711 = 98118
Step 139: 98118 + 711 = 98829
Step 140: 98829 + 711 = 99540
Step 141: 99540 + 711 = 100251
Step 142: 100251 + 711 = 100962
Step 143: 100962 + 711 = 101673
Step 144: 101673 + 711 = 102384
Step 145: 102384 + 711 = 103095
Step 146: 103095 + 711 = 103806
Step 147: 103806 + 711 = 104517
Step 148: 104517 + 711 = 105228
Step 149: 105228 + 711 = 105939
Step 150: 105939 + 711 = 106650
Step 151: 106650 + 711 = 107361
Step 152: 107361 + 711 = 108072
Step 153: 108072 + 711 = 108783
Step 154: 108783 + 711 = 109494
Step 155: 109494 + 711 = 110205
Step 156: 110205 + 711 = 110916
Step 157: 110916 + 711 = 111627
Step 158: 111627 + 711 = 112338
Step 159: 112338 + 711 = 113049
Step 160: 113049 + 711 = 113760
Step 161: 113760 + 711 = 114471
Step 162: 114471 + 711 = 115182
Step 163: 115182 + 711 = 115893
Step 164: 115893 + 711 = 116604
Step 165: 116604 + 711 = 117315
Step 166: 117315 + 711 = 118026
Step 167: 118026 + 711 = 118737
Step 168: 118737 + 711 = 119448
Step 169: 119448 + 711 = 120159
Step 170: 120159 + 711 = 120870
Step 171: 120870 + 711 = 121581
Step 172: 121581 + 711 = 122292
Step 173: 122292 + 711 = 123003

So, 711*173 = 123003