OK, let's work through this together. We're starting with 546 and we're going to multiply it by 108, which means we add 546 to itself 108 times.
Step 1: 0 + 546 = 546
Step 2: 546 + 546 = 1092
Step 3: 1092 + 546 = 1638
Step 4: 1638 + 546 = 2184
Step 5: 2184 + 546 = 2730
Step 6: 2730 + 546 = 3276
Step 7: 3276 + 546 = 3822
Step 8: 3822 + 546 = 4368
Step 9: 4368 + 546 = 4914
Step 10: 4914 + 546 = 5460
Step 11: 5460 + 546 = 6006
Step 12: 6006 + 546 = 6552
Step 13: 6552 + 546 = 7098
Step 14: 7098 + 546 = 7644
Step 15: 7644 + 546 = 8190
Step 16: 8190 + 546 = 8736
Step 17: 8736 + 546 = 9282
Step 18: 9282 + 546 = 9828
Step 19: 9828 + 546 = 10374
Step 20: 10374 + 546 = 10920
Step 21: 10920 + 546 = 11466
Step 22: 11466 + 546 = 12012
Step 23: 12012 + 546 = 12558
Step 24: 12558 + 546 = 13104
Step 25: 13104 + 546 = 13650
Step 26: 13650 + 546 = 14196
Step 27: 14196 + 546 = 14742
Step 28: 14742 + 546 = 15288
Step 29: 15288 + 546 = 15834
Step 30: 15834 + 546 = 16380
Step 31: 16380 + 546 = 16926
Step 32: 16926 + 546 = 17472
Step 33: 17472 + 546 = 18018
Step 34: 18018 + 546 = 18564
Step 35: 18564 + 546 = 19110
Step 36: 19110 + 546 = 19656
Step 37: 19656 + 546 = 20202
Step 38: 20202 + 546 = 20748
Step 39: 20748 + 546 = 21294
Step 40: 21294 + 546 = 21840
Step 41: 21840 + 546 = 22386
Step 42: 22386 + 546 = 22932
Step 43: 22932 + 546 = 23478
Step 44: 23478 + 546 = 24024
Step 45: 24024 + 546 = 24570
Step 46: 24570 + 546 = 25116
Step 47: 25116 + 546 = 25662
Step 48: 25662 + 546 = 26208
Step 49: 26208 + 546 = 26754
Step 50: 26754 + 546 = 27300
Step 51: 27300 + 546 = 27846
Step 52: 27846 + 546 = 28392
Step 53: 28392 + 546 = 28938
Step 54: 28938 + 546 = 29484
Step 55: 29484 + 546 = 30030
Step 56: 30030 + 546 = 30576
Step 57: 30576 + 546 = 31122
Step 58: 31122 + 546 = 31668
Step 59: 31668 + 546 = 32214
Step 60: 32214 + 546 = 32760
Step 61: 32760 + 546 = 33306
Step 62: 33306 + 546 = 33852
Step 63: 33852 + 546 = 34398
Step 64: 34398 + 546 = 34944
Step 65: 34944 + 546 = 35490
Step 66: 35490 + 546 = 36036
Step 67: 36036 + 546 = 36582
Step 68: 36582 + 546 = 37128
Step 69: 37128 + 546 = 37674
Step 70: 37674 + 546 = 38220
Step 71: 38220 + 546 = 38766
Step 72: 38766 + 546 = 39312
Step 73: 39312 + 546 = 39858
Step 74: 39858 + 546 = 40404
Step 75: 40404 + 546 = 40950
Step 76: 40950 + 546 = 41496
Step 77: 41496 + 546 = 42042
Step 78: 42042 + 546 = 42588
Step 79: 42588 + 546 = 43134
Step 80: 43134 + 546 = 43680
Step 81: 43680 + 546 = 44226
Step 82: 44226 + 546 = 44772
Step 83: 44772 + 546 = 45318
Step 84: 45318 + 546 = 45864
Step 85: 45864 + 546 = 46410
Step 86: 46410 + 546 = 46956
Step 87: 46956 + 546 = 47502
Step 88: 47502 + 546 = 48048
Step 89: 48048 + 546 = 48594
Step 90: 48594 + 546 = 49140
Step 91: 49140 + 546 = 49686
Step 92: 49686 + 546 = 50232
Step 93: 50232 + 546 = 50778
Step 94: 50778 + 546 = 51324
Step 95: 51324 + 546 = 51870
Step 96: 51870 + 546 = 52416
Step 97: 52416 + 546 = 52962
Step 98: 52962 + 546 = 53508
Step 99: 53508 + 546 = 54054
Step 100: 54054 + 546 = 54600
Step 101: 54600 + 546 = 55146
Step 102: 55146 + 546 = 55692
Step 103: 55692 + 546 = 56238
Step 104: 56238 + 546 = 56784
Step 105: 56784 + 546 = 57330
Step 106: 57330 + 546 = 57876
Step 107: 57876 + 546 = 58422
Step 108: 58422 + 546 = 58968

So, 546*108 = 58968