Sure thing, let's get straight to it. We start with 73 and we're going to multiply it by 121, which means adding 73 to itself 121 times.
Step 1: 0 + 73 = 73
Step 2: 73 + 73 = 146
Step 3: 146 + 73 = 219
Step 4: 219 + 73 = 292
Step 5: 292 + 73 = 365
Step 6: 365 + 73 = 438
Step 7: 438 + 73 = 511
Step 8: 511 + 73 = 584
Step 9: 584 + 73 = 657
Step 10: 657 + 73 = 730
Step 11: 730 + 73 = 803
Step 12: 803 + 73 = 876
Step 13: 876 + 73 = 949
Step 14: 949 + 73 = 1022
Step 15: 1022 + 73 = 1095
Step 16: 1095 + 73 = 1168
Step 17: 1168 + 73 = 1241
Step 18: 1241 + 73 = 1314
Step 19: 1314 + 73 = 1387
Step 20: 1387 + 73 = 1460
Step 21: 1460 + 73 = 1533
Step 22: 1533 + 73 = 1606
Step 23: 1606 + 73 = 1679
Step 24: 1679 + 73 = 1752
Step 25: 1752 + 73 = 1825
Step 26: 1825 + 73 = 1898
Step 27: 1898 + 73 = 1971
Step 28: 1971 + 73 = 2044
Step 29: 2044 + 73 = 2117
Step 30: 2117 + 73 = 2190
Step 31: 2190 + 73 = 2263
Step 32: 2263 + 73 = 2336
Step 33: 2336 + 73 = 2409
Step 34: 2409 + 73 = 2482
Step 35: 2482 + 73 = 2555
Step 36: 2555 + 73 = 2628
Step 37: 2628 + 73 = 2701
Step 38: 2701 + 73 = 2774
Step 39: 2774 + 73 = 2847
Step 40: 2847 + 73 = 2920
Step 41: 2920 + 73 = 2993
Step 42: 2993 + 73 = 3066
Step 43: 3066 + 73 = 3139
Step 44: 3139 + 73 = 3212
Step 45: 3212 + 73 = 3285
Step 46: 3285 + 73 = 3358
Step 47: 3358 + 73 = 3431
Step 48: 3431 + 73 = 3504
Step 49: 3504 + 73 = 3577
Step 50: 3577 + 73 = 3650
Step 51: 3650 + 73 = 3723
Step 52: 3723 + 73 = 3796
Step 53: 3796 + 73 = 3869
Step 54: 3869 + 73 = 3942
Step 55: 3942 + 73 = 4015
Step 56: 4015 + 73 = 4088
Step 57: 4088 + 73 = 4161
Step 58: 4161 + 73 = 4234
Step 59: 4234 + 73 = 4307
Step 60: 4307 + 73 = 4380
Step 61: 4380 + 73 = 4453
Step 62: 4453 + 73 = 4526
Step 63: 4526 + 73 = 4599
Step 64: 4599 + 73 = 4672
Step 65: 4672 + 73 = 4745
Step 66: 4745 + 73 = 4818
Step 67: 4818 + 73 = 4891
Step 68: 4891 + 73 = 4964
Step 69: 4964 + 73 = 5037
Step 70: 5037 + 73 = 5110
Step 71: 5110 + 73 = 5183
Step 72: 5183 + 73 = 5256
Step 73: 5256 + 73 = 5329
Step 74: 5329 + 73 = 5402
Step 75: 5402 + 73 = 5475
Step 76: 5475 + 73 = 5548
Step 77: 5548 + 73 = 5621
Step 78: 5621 + 73 = 5694
Step 79: 5694 + 73 = 5767
Step 80: 5767 + 73 = 5840
Step 81: 5840 + 73 = 5913
Step 82: 5913 + 73 = 5986
Step 83: 5986 + 73 = 6059
Step 84: 6059 + 73 = 6132
Step 85: 6132 + 73 = 6205
Step 86: 6205 + 73 = 6278
Step 87: 6278 + 73 = 6351
Step 88: 6351 + 73 = 6424
Step 89: 6424 + 73 = 6497
Step 90: 6497 + 73 = 6570
Step 91: 6570 + 73 = 6643
Step 92: 6643 + 73 = 6716
Step 93: 6716 + 73 = 6789
Step 94: 6789 + 73 = 6862
Step 95: 6862 + 73 = 6935
Step 96: 6935 + 73 = 7008
Step 97: 7008 + 73 = 7081
Step 98: 7081 + 73 = 7154
Step 99: 7154 + 73 = 7227
Step 100: 7227 + 73 = 7300
Step 101: 7300 + 73 = 7373
Step 102: 7373 + 73 = 7446
Step 103: 7446 + 73 = 7519
Step 104: 7519 + 73 = 7592
Step 105: 7592 + 73 = 7665
Step 106: 7665 + 73 = 7738
Step 107: 7738 + 73 = 7811
Step 108: 7811 + 73 = 7884
Step 109: 7884 + 73 = 7957
Step 110: 7957 + 73 = 8030
Step 111: 8030 + 73 = 8103
Step 112: 8103 + 73 = 8176
Step 113: 8176 + 73 = 8249
Step 114: 8249 + 73 = 8322
Step 115: 8322 + 73 = 8395
Step 116: 8395 + 73 = 8468
Step 117: 8468 + 73 = 8541
Step 118: 8541 + 73 = 8614
Step 119: 8614 + 73 = 8687
Step 120: 8687 + 73 = 8760
Step 121: 8760 + 73 = 8833

So, 73*121 = 8833