Alright, let's solve this math problem step by step. First, we have the number 543. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 145. So, we're going to take the number 543 and add it to itself 145 times.
Step 1: 0 + 543 = 543
Step 2: 543 + 543 = 1086
Step 3: 1086 + 543 = 1629
Step 4: 1629 + 543 = 2172
Step 5: 2172 + 543 = 2715
Step 6: 2715 + 543 = 3258
Step 7: 3258 + 543 = 3801
Step 8: 3801 + 543 = 4344
Step 9: 4344 + 543 = 4887
Step 10: 4887 + 543 = 5430
Step 11: 5430 + 543 = 5973
Step 12: 5973 + 543 = 6516
Step 13: 6516 + 543 = 7059
Step 14: 7059 + 543 = 7602
Step 15: 7602 + 543 = 8145
Step 16: 8145 + 543 = 8688
Step 17: 8688 + 543 = 9231
Step 18: 9231 + 543 = 9774
Step 19: 9774 + 543 = 10317
Step 20: 10317 + 543 = 10860
Step 21: 10860 + 543 = 11403
Step 22: 11403 + 543 = 11946
Step 23: 11946 + 543 = 12489
Step 24: 12489 + 543 = 13032
Step 25: 13032 + 543 = 13575
Step 26: 13575 + 543 = 14118
Step 27: 14118 + 543 = 14661
Step 28: 14661 + 543 = 15204
Step 29: 15204 + 543 = 15747
Step 30: 15747 + 543 = 16290
Step 31: 16290 + 543 = 16833
Step 32: 16833 + 543 = 17376
Step 33: 17376 + 543 = 17919
Step 34: 17919 + 543 = 18462
Step 35: 18462 + 543 = 19005
Step 36: 19005 + 543 = 19548
Step 37: 19548 + 543 = 20091
Step 38: 20091 + 543 = 20634
Step 39: 20634 + 543 = 21177
Step 40: 21177 + 543 = 21720
Step 41: 21720 + 543 = 22263
Step 42: 22263 + 543 = 22806
Step 43: 22806 + 543 = 23349
Step 44: 23349 + 543 = 23892
Step 45: 23892 + 543 = 24435
Step 46: 24435 + 543 = 24978
Step 47: 24978 + 543 = 25521
Step 48: 25521 + 543 = 26064
Step 49: 26064 + 543 = 26607
Step 50: 26607 + 543 = 27150
Step 51: 27150 + 543 = 27693
Step 52: 27693 + 543 = 28236
Step 53: 28236 + 543 = 28779
Step 54: 28779 + 543 = 29322
Step 55: 29322 + 543 = 29865
Step 56: 29865 + 543 = 30408
Step 57: 30408 + 543 = 30951
Step 58: 30951 + 543 = 31494
Step 59: 31494 + 543 = 32037
Step 60: 32037 + 543 = 32580
Step 61: 32580 + 543 = 33123
Step 62: 33123 + 543 = 33666
Step 63: 33666 + 543 = 34209
Step 64: 34209 + 543 = 34752
Step 65: 34752 + 543 = 35295
Step 66: 35295 + 543 = 35838
Step 67: 35838 + 543 = 36381
Step 68: 36381 + 543 = 36924
Step 69: 36924 + 543 = 37467
Step 70: 37467 + 543 = 38010
Step 71: 38010 + 543 = 38553
Step 72: 38553 + 543 = 39096
Step 73: 39096 + 543 = 39639
Step 74: 39639 + 543 = 40182
Step 75: 40182 + 543 = 40725
Step 76: 40725 + 543 = 41268
Step 77: 41268 + 543 = 41811
Step 78: 41811 + 543 = 42354
Step 79: 42354 + 543 = 42897
Step 80: 42897 + 543 = 43440
Step 81: 43440 + 543 = 43983
Step 82: 43983 + 543 = 44526
Step 83: 44526 + 543 = 45069
Step 84: 45069 + 543 = 45612
Step 85: 45612 + 543 = 46155
Step 86: 46155 + 543 = 46698
Step 87: 46698 + 543 = 47241
Step 88: 47241 + 543 = 47784
Step 89: 47784 + 543 = 48327
Step 90: 48327 + 543 = 48870
Step 91: 48870 + 543 = 49413
Step 92: 49413 + 543 = 49956
Step 93: 49956 + 543 = 50499
Step 94: 50499 + 543 = 51042
Step 95: 51042 + 543 = 51585
Step 96: 51585 + 543 = 52128
Step 97: 52128 + 543 = 52671
Step 98: 52671 + 543 = 53214
Step 99: 53214 + 543 = 53757
Step 100: 53757 + 543 = 54300
Step 101: 54300 + 543 = 54843
Step 102: 54843 + 543 = 55386
Step 103: 55386 + 543 = 55929
Step 104: 55929 + 543 = 56472
Step 105: 56472 + 543 = 57015
Step 106: 57015 + 543 = 57558
Step 107: 57558 + 543 = 58101
Step 108: 58101 + 543 = 58644
Step 109: 58644 + 543 = 59187
Step 110: 59187 + 543 = 59730
Step 111: 59730 + 543 = 60273
Step 112: 60273 + 543 = 60816
Step 113: 60816 + 543 = 61359
Step 114: 61359 + 543 = 61902
Step 115: 61902 + 543 = 62445
Step 116: 62445 + 543 = 62988
Step 117: 62988 + 543 = 63531
Step 118: 63531 + 543 = 64074
Step 119: 64074 + 543 = 64617
Step 120: 64617 + 543 = 65160
Step 121: 65160 + 543 = 65703
Step 122: 65703 + 543 = 66246
Step 123: 66246 + 543 = 66789
Step 124: 66789 + 543 = 67332
Step 125: 67332 + 543 = 67875
Step 126: 67875 + 543 = 68418
Step 127: 68418 + 543 = 68961
Step 128: 68961 + 543 = 69504
Step 129: 69504 + 543 = 70047
Step 130: 70047 + 543 = 70590
Step 131: 70590 + 543 = 71133
Step 132: 71133 + 543 = 71676
Step 133: 71676 + 543 = 72219
Step 134: 72219 + 543 = 72762
Step 135: 72762 + 543 = 73305
Step 136: 73305 + 543 = 73848
Step 137: 73848 + 543 = 74391
Step 138: 74391 + 543 = 74934
Step 139: 74934 + 543 = 75477
Step 140: 75477 + 543 = 76020
Step 141: 76020 + 543 = 76563
Step 142: 76563 + 543 = 77106
Step 143: 77106 + 543 = 77649
Step 144: 77649 + 543 = 78192
Step 145: 78192 + 543 = 78735

So, 543*145 = 78735