OK, let's work through this together. We're starting with 273 and we're going to multiply it by 164, which means we add 273 to itself 164 times.
Step 1: 0 + 273 = 273
Step 2: 273 + 273 = 546
Step 3: 546 + 273 = 819
Step 4: 819 + 273 = 1092
Step 5: 1092 + 273 = 1365
Step 6: 1365 + 273 = 1638
Step 7: 1638 + 273 = 1911
Step 8: 1911 + 273 = 2184
Step 9: 2184 + 273 = 2457
Step 10: 2457 + 273 = 2730
Step 11: 2730 + 273 = 3003
Step 12: 3003 + 273 = 3276
Step 13: 3276 + 273 = 3549
Step 14: 3549 + 273 = 3822
Step 15: 3822 + 273 = 4095
Step 16: 4095 + 273 = 4368
Step 17: 4368 + 273 = 4641
Step 18: 4641 + 273 = 4914
Step 19: 4914 + 273 = 5187
Step 20: 5187 + 273 = 5460
Step 21: 5460 + 273 = 5733
Step 22: 5733 + 273 = 6006
Step 23: 6006 + 273 = 6279
Step 24: 6279 + 273 = 6552
Step 25: 6552 + 273 = 6825
Step 26: 6825 + 273 = 7098
Step 27: 7098 + 273 = 7371
Step 28: 7371 + 273 = 7644
Step 29: 7644 + 273 = 7917
Step 30: 7917 + 273 = 8190
Step 31: 8190 + 273 = 8463
Step 32: 8463 + 273 = 8736
Step 33: 8736 + 273 = 9009
Step 34: 9009 + 273 = 9282
Step 35: 9282 + 273 = 9555
Step 36: 9555 + 273 = 9828
Step 37: 9828 + 273 = 10101
Step 38: 10101 + 273 = 10374
Step 39: 10374 + 273 = 10647
Step 40: 10647 + 273 = 10920
Step 41: 10920 + 273 = 11193
Step 42: 11193 + 273 = 11466
Step 43: 11466 + 273 = 11739
Step 44: 11739 + 273 = 12012
Step 45: 12012 + 273 = 12285
Step 46: 12285 + 273 = 12558
Step 47: 12558 + 273 = 12831
Step 48: 12831 + 273 = 13104
Step 49: 13104 + 273 = 13377
Step 50: 13377 + 273 = 13650
Step 51: 13650 + 273 = 13923
Step 52: 13923 + 273 = 14196
Step 53: 14196 + 273 = 14469
Step 54: 14469 + 273 = 14742
Step 55: 14742 + 273 = 15015
Step 56: 15015 + 273 = 15288
Step 57: 15288 + 273 = 15561
Step 58: 15561 + 273 = 15834
Step 59: 15834 + 273 = 16107
Step 60: 16107 + 273 = 16380
Step 61: 16380 + 273 = 16653
Step 62: 16653 + 273 = 16926
Step 63: 16926 + 273 = 17199
Step 64: 17199 + 273 = 17472
Step 65: 17472 + 273 = 17745
Step 66: 17745 + 273 = 18018
Step 67: 18018 + 273 = 18291
Step 68: 18291 + 273 = 18564
Step 69: 18564 + 273 = 18837
Step 70: 18837 + 273 = 19110
Step 71: 19110 + 273 = 19383
Step 72: 19383 + 273 = 19656
Step 73: 19656 + 273 = 19929
Step 74: 19929 + 273 = 20202
Step 75: 20202 + 273 = 20475
Step 76: 20475 + 273 = 20748
Step 77: 20748 + 273 = 21021
Step 78: 21021 + 273 = 21294
Step 79: 21294 + 273 = 21567
Step 80: 21567 + 273 = 21840
Step 81: 21840 + 273 = 22113
Step 82: 22113 + 273 = 22386
Step 83: 22386 + 273 = 22659
Step 84: 22659 + 273 = 22932
Step 85: 22932 + 273 = 23205
Step 86: 23205 + 273 = 23478
Step 87: 23478 + 273 = 23751
Step 88: 23751 + 273 = 24024
Step 89: 24024 + 273 = 24297
Step 90: 24297 + 273 = 24570
Step 91: 24570 + 273 = 24843
Step 92: 24843 + 273 = 25116
Step 93: 25116 + 273 = 25389
Step 94: 25389 + 273 = 25662
Step 95: 25662 + 273 = 25935
Step 96: 25935 + 273 = 26208
Step 97: 26208 + 273 = 26481
Step 98: 26481 + 273 = 26754
Step 99: 26754 + 273 = 27027
Step 100: 27027 + 273 = 27300
Step 101: 27300 + 273 = 27573
Step 102: 27573 + 273 = 27846
Step 103: 27846 + 273 = 28119
Step 104: 28119 + 273 = 28392
Step 105: 28392 + 273 = 28665
Step 106: 28665 + 273 = 28938
Step 107: 28938 + 273 = 29211
Step 108: 29211 + 273 = 29484
Step 109: 29484 + 273 = 29757
Step 110: 29757 + 273 = 30030
Step 111: 30030 + 273 = 30303
Step 112: 30303 + 273 = 30576
Step 113: 30576 + 273 = 30849
Step 114: 30849 + 273 = 31122
Step 115: 31122 + 273 = 31395
Step 116: 31395 + 273 = 31668
Step 117: 31668 + 273 = 31941
Step 118: 31941 + 273 = 32214
Step 119: 32214 + 273 = 32487
Step 120: 32487 + 273 = 32760
Step 121: 32760 + 273 = 33033
Step 122: 33033 + 273 = 33306
Step 123: 33306 + 273 = 33579
Step 124: 33579 + 273 = 33852
Step 125: 33852 + 273 = 34125
Step 126: 34125 + 273 = 34398
Step 127: 34398 + 273 = 34671
Step 128: 34671 + 273 = 34944
Step 129: 34944 + 273 = 35217
Step 130: 35217 + 273 = 35490
Step 131: 35490 + 273 = 35763
Step 132: 35763 + 273 = 36036
Step 133: 36036 + 273 = 36309
Step 134: 36309 + 273 = 36582
Step 135: 36582 + 273 = 36855
Step 136: 36855 + 273 = 37128
Step 137: 37128 + 273 = 37401
Step 138: 37401 + 273 = 37674
Step 139: 37674 + 273 = 37947
Step 140: 37947 + 273 = 38220
Step 141: 38220 + 273 = 38493
Step 142: 38493 + 273 = 38766
Step 143: 38766 + 273 = 39039
Step 144: 39039 + 273 = 39312
Step 145: 39312 + 273 = 39585
Step 146: 39585 + 273 = 39858
Step 147: 39858 + 273 = 40131
Step 148: 40131 + 273 = 40404
Step 149: 40404 + 273 = 40677
Step 150: 40677 + 273 = 40950
Step 151: 40950 + 273 = 41223
Step 152: 41223 + 273 = 41496
Step 153: 41496 + 273 = 41769
Step 154: 41769 + 273 = 42042
Step 155: 42042 + 273 = 42315
Step 156: 42315 + 273 = 42588
Step 157: 42588 + 273 = 42861
Step 158: 42861 + 273 = 43134
Step 159: 43134 + 273 = 43407
Step 160: 43407 + 273 = 43680
Step 161: 43680 + 273 = 43953
Step 162: 43953 + 273 = 44226
Step 163: 44226 + 273 = 44499
Step 164: 44499 + 273 = 44772

So, 273*164 = 44772