Alright, let's solve this math problem step by step. First, we have the number 545. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 159. So, we're going to take the number 545 and add it to itself 159 times.
Step 1: 0 + 545 = 545
Step 2: 545 + 545 = 1090
Step 3: 1090 + 545 = 1635
Step 4: 1635 + 545 = 2180
Step 5: 2180 + 545 = 2725
Step 6: 2725 + 545 = 3270
Step 7: 3270 + 545 = 3815
Step 8: 3815 + 545 = 4360
Step 9: 4360 + 545 = 4905
Step 10: 4905 + 545 = 5450
Step 11: 5450 + 545 = 5995
Step 12: 5995 + 545 = 6540
Step 13: 6540 + 545 = 7085
Step 14: 7085 + 545 = 7630
Step 15: 7630 + 545 = 8175
Step 16: 8175 + 545 = 8720
Step 17: 8720 + 545 = 9265
Step 18: 9265 + 545 = 9810
Step 19: 9810 + 545 = 10355
Step 20: 10355 + 545 = 10900
Step 21: 10900 + 545 = 11445
Step 22: 11445 + 545 = 11990
Step 23: 11990 + 545 = 12535
Step 24: 12535 + 545 = 13080
Step 25: 13080 + 545 = 13625
Step 26: 13625 + 545 = 14170
Step 27: 14170 + 545 = 14715
Step 28: 14715 + 545 = 15260
Step 29: 15260 + 545 = 15805
Step 30: 15805 + 545 = 16350
Step 31: 16350 + 545 = 16895
Step 32: 16895 + 545 = 17440
Step 33: 17440 + 545 = 17985
Step 34: 17985 + 545 = 18530
Step 35: 18530 + 545 = 19075
Step 36: 19075 + 545 = 19620
Step 37: 19620 + 545 = 20165
Step 38: 20165 + 545 = 20710
Step 39: 20710 + 545 = 21255
Step 40: 21255 + 545 = 21800
Step 41: 21800 + 545 = 22345
Step 42: 22345 + 545 = 22890
Step 43: 22890 + 545 = 23435
Step 44: 23435 + 545 = 23980
Step 45: 23980 + 545 = 24525
Step 46: 24525 + 545 = 25070
Step 47: 25070 + 545 = 25615
Step 48: 25615 + 545 = 26160
Step 49: 26160 + 545 = 26705
Step 50: 26705 + 545 = 27250
Step 51: 27250 + 545 = 27795
Step 52: 27795 + 545 = 28340
Step 53: 28340 + 545 = 28885
Step 54: 28885 + 545 = 29430
Step 55: 29430 + 545 = 29975
Step 56: 29975 + 545 = 30520
Step 57: 30520 + 545 = 31065
Step 58: 31065 + 545 = 31610
Step 59: 31610 + 545 = 32155
Step 60: 32155 + 545 = 32700
Step 61: 32700 + 545 = 33245
Step 62: 33245 + 545 = 33790
Step 63: 33790 + 545 = 34335
Step 64: 34335 + 545 = 34880
Step 65: 34880 + 545 = 35425
Step 66: 35425 + 545 = 35970
Step 67: 35970 + 545 = 36515
Step 68: 36515 + 545 = 37060
Step 69: 37060 + 545 = 37605
Step 70: 37605 + 545 = 38150
Step 71: 38150 + 545 = 38695
Step 72: 38695 + 545 = 39240
Step 73: 39240 + 545 = 39785
Step 74: 39785 + 545 = 40330
Step 75: 40330 + 545 = 40875
Step 76: 40875 + 545 = 41420
Step 77: 41420 + 545 = 41965
Step 78: 41965 + 545 = 42510
Step 79: 42510 + 545 = 43055
Step 80: 43055 + 545 = 43600
Step 81: 43600 + 545 = 44145
Step 82: 44145 + 545 = 44690
Step 83: 44690 + 545 = 45235
Step 84: 45235 + 545 = 45780
Step 85: 45780 + 545 = 46325
Step 86: 46325 + 545 = 46870
Step 87: 46870 + 545 = 47415
Step 88: 47415 + 545 = 47960
Step 89: 47960 + 545 = 48505
Step 90: 48505 + 545 = 49050
Step 91: 49050 + 545 = 49595
Step 92: 49595 + 545 = 50140
Step 93: 50140 + 545 = 50685
Step 94: 50685 + 545 = 51230
Step 95: 51230 + 545 = 51775
Step 96: 51775 + 545 = 52320
Step 97: 52320 + 545 = 52865
Step 98: 52865 + 545 = 53410
Step 99: 53410 + 545 = 53955
Step 100: 53955 + 545 = 54500
Step 101: 54500 + 545 = 55045
Step 102: 55045 + 545 = 55590
Step 103: 55590 + 545 = 56135
Step 104: 56135 + 545 = 56680
Step 105: 56680 + 545 = 57225
Step 106: 57225 + 545 = 57770
Step 107: 57770 + 545 = 58315
Step 108: 58315 + 545 = 58860
Step 109: 58860 + 545 = 59405
Step 110: 59405 + 545 = 59950
Step 111: 59950 + 545 = 60495
Step 112: 60495 + 545 = 61040
Step 113: 61040 + 545 = 61585
Step 114: 61585 + 545 = 62130
Step 115: 62130 + 545 = 62675
Step 116: 62675 + 545 = 63220
Step 117: 63220 + 545 = 63765
Step 118: 63765 + 545 = 64310
Step 119: 64310 + 545 = 64855
Step 120: 64855 + 545 = 65400
Step 121: 65400 + 545 = 65945
Step 122: 65945 + 545 = 66490
Step 123: 66490 + 545 = 67035
Step 124: 67035 + 545 = 67580
Step 125: 67580 + 545 = 68125
Step 126: 68125 + 545 = 68670
Step 127: 68670 + 545 = 69215
Step 128: 69215 + 545 = 69760
Step 129: 69760 + 545 = 70305
Step 130: 70305 + 545 = 70850
Step 131: 70850 + 545 = 71395
Step 132: 71395 + 545 = 71940
Step 133: 71940 + 545 = 72485
Step 134: 72485 + 545 = 73030
Step 135: 73030 + 545 = 73575
Step 136: 73575 + 545 = 74120
Step 137: 74120 + 545 = 74665
Step 138: 74665 + 545 = 75210
Step 139: 75210 + 545 = 75755
Step 140: 75755 + 545 = 76300
Step 141: 76300 + 545 = 76845
Step 142: 76845 + 545 = 77390
Step 143: 77390 + 545 = 77935
Step 144: 77935 + 545 = 78480
Step 145: 78480 + 545 = 79025
Step 146: 79025 + 545 = 79570
Step 147: 79570 + 545 = 80115
Step 148: 80115 + 545 = 80660
Step 149: 80660 + 545 = 81205
Step 150: 81205 + 545 = 81750
Step 151: 81750 + 545 = 82295
Step 152: 82295 + 545 = 82840
Step 153: 82840 + 545 = 83385
Step 154: 83385 + 545 = 83930
Step 155: 83930 + 545 = 84475
Step 156: 84475 + 545 = 85020
Step 157: 85020 + 545 = 85565
Step 158: 85565 + 545 = 86110
Step 159: 86110 + 545 = 86655

So, 545*159 = 86655