Let's get this math done. We have 547 and we're going to multiply it by 78. This is the same as taking 547 and adding it to itself 78 times.
Step 1: 0 + 547 = 547
Step 2: 547 + 547 = 1094
Step 3: 1094 + 547 = 1641
Step 4: 1641 + 547 = 2188
Step 5: 2188 + 547 = 2735
Step 6: 2735 + 547 = 3282
Step 7: 3282 + 547 = 3829
Step 8: 3829 + 547 = 4376
Step 9: 4376 + 547 = 4923
Step 10: 4923 + 547 = 5470
Step 11: 5470 + 547 = 6017
Step 12: 6017 + 547 = 6564
Step 13: 6564 + 547 = 7111
Step 14: 7111 + 547 = 7658
Step 15: 7658 + 547 = 8205
Step 16: 8205 + 547 = 8752
Step 17: 8752 + 547 = 9299
Step 18: 9299 + 547 = 9846
Step 19: 9846 + 547 = 10393
Step 20: 10393 + 547 = 10940
Step 21: 10940 + 547 = 11487
Step 22: 11487 + 547 = 12034
Step 23: 12034 + 547 = 12581
Step 24: 12581 + 547 = 13128
Step 25: 13128 + 547 = 13675
Step 26: 13675 + 547 = 14222
Step 27: 14222 + 547 = 14769
Step 28: 14769 + 547 = 15316
Step 29: 15316 + 547 = 15863
Step 30: 15863 + 547 = 16410
Step 31: 16410 + 547 = 16957
Step 32: 16957 + 547 = 17504
Step 33: 17504 + 547 = 18051
Step 34: 18051 + 547 = 18598
Step 35: 18598 + 547 = 19145
Step 36: 19145 + 547 = 19692
Step 37: 19692 + 547 = 20239
Step 38: 20239 + 547 = 20786
Step 39: 20786 + 547 = 21333
Step 40: 21333 + 547 = 21880
Step 41: 21880 + 547 = 22427
Step 42: 22427 + 547 = 22974
Step 43: 22974 + 547 = 23521
Step 44: 23521 + 547 = 24068
Step 45: 24068 + 547 = 24615
Step 46: 24615 + 547 = 25162
Step 47: 25162 + 547 = 25709
Step 48: 25709 + 547 = 26256
Step 49: 26256 + 547 = 26803
Step 50: 26803 + 547 = 27350
Step 51: 27350 + 547 = 27897
Step 52: 27897 + 547 = 28444
Step 53: 28444 + 547 = 28991
Step 54: 28991 + 547 = 29538
Step 55: 29538 + 547 = 30085
Step 56: 30085 + 547 = 30632
Step 57: 30632 + 547 = 31179
Step 58: 31179 + 547 = 31726
Step 59: 31726 + 547 = 32273
Step 60: 32273 + 547 = 32820
Step 61: 32820 + 547 = 33367
Step 62: 33367 + 547 = 33914
Step 63: 33914 + 547 = 34461
Step 64: 34461 + 547 = 35008
Step 65: 35008 + 547 = 35555
Step 66: 35555 + 547 = 36102
Step 67: 36102 + 547 = 36649
Step 68: 36649 + 547 = 37196
Step 69: 37196 + 547 = 37743
Step 70: 37743 + 547 = 38290
Step 71: 38290 + 547 = 38837
Step 72: 38837 + 547 = 39384
Step 73: 39384 + 547 = 39931
Step 74: 39931 + 547 = 40478
Step 75: 40478 + 547 = 41025
Step 76: 41025 + 547 = 41572
Step 77: 41572 + 547 = 42119
Step 78: 42119 + 547 = 42666

So, 547*78 = 42666