Alright, let's solve this math problem step by step. First, we have the number 729. 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 729 and add it to itself 159 times.
Step 1: 0 + 729 = 729
Step 2: 729 + 729 = 1458
Step 3: 1458 + 729 = 2187
Step 4: 2187 + 729 = 2916
Step 5: 2916 + 729 = 3645
Step 6: 3645 + 729 = 4374
Step 7: 4374 + 729 = 5103
Step 8: 5103 + 729 = 5832
Step 9: 5832 + 729 = 6561
Step 10: 6561 + 729 = 7290
Step 11: 7290 + 729 = 8019
Step 12: 8019 + 729 = 8748
Step 13: 8748 + 729 = 9477
Step 14: 9477 + 729 = 10206
Step 15: 10206 + 729 = 10935
Step 16: 10935 + 729 = 11664
Step 17: 11664 + 729 = 12393
Step 18: 12393 + 729 = 13122
Step 19: 13122 + 729 = 13851
Step 20: 13851 + 729 = 14580
Step 21: 14580 + 729 = 15309
Step 22: 15309 + 729 = 16038
Step 23: 16038 + 729 = 16767
Step 24: 16767 + 729 = 17496
Step 25: 17496 + 729 = 18225
Step 26: 18225 + 729 = 18954
Step 27: 18954 + 729 = 19683
Step 28: 19683 + 729 = 20412
Step 29: 20412 + 729 = 21141
Step 30: 21141 + 729 = 21870
Step 31: 21870 + 729 = 22599
Step 32: 22599 + 729 = 23328
Step 33: 23328 + 729 = 24057
Step 34: 24057 + 729 = 24786
Step 35: 24786 + 729 = 25515
Step 36: 25515 + 729 = 26244
Step 37: 26244 + 729 = 26973
Step 38: 26973 + 729 = 27702
Step 39: 27702 + 729 = 28431
Step 40: 28431 + 729 = 29160
Step 41: 29160 + 729 = 29889
Step 42: 29889 + 729 = 30618
Step 43: 30618 + 729 = 31347
Step 44: 31347 + 729 = 32076
Step 45: 32076 + 729 = 32805
Step 46: 32805 + 729 = 33534
Step 47: 33534 + 729 = 34263
Step 48: 34263 + 729 = 34992
Step 49: 34992 + 729 = 35721
Step 50: 35721 + 729 = 36450
Step 51: 36450 + 729 = 37179
Step 52: 37179 + 729 = 37908
Step 53: 37908 + 729 = 38637
Step 54: 38637 + 729 = 39366
Step 55: 39366 + 729 = 40095
Step 56: 40095 + 729 = 40824
Step 57: 40824 + 729 = 41553
Step 58: 41553 + 729 = 42282
Step 59: 42282 + 729 = 43011
Step 60: 43011 + 729 = 43740
Step 61: 43740 + 729 = 44469
Step 62: 44469 + 729 = 45198
Step 63: 45198 + 729 = 45927
Step 64: 45927 + 729 = 46656
Step 65: 46656 + 729 = 47385
Step 66: 47385 + 729 = 48114
Step 67: 48114 + 729 = 48843
Step 68: 48843 + 729 = 49572
Step 69: 49572 + 729 = 50301
Step 70: 50301 + 729 = 51030
Step 71: 51030 + 729 = 51759
Step 72: 51759 + 729 = 52488
Step 73: 52488 + 729 = 53217
Step 74: 53217 + 729 = 53946
Step 75: 53946 + 729 = 54675
Step 76: 54675 + 729 = 55404
Step 77: 55404 + 729 = 56133
Step 78: 56133 + 729 = 56862
Step 79: 56862 + 729 = 57591
Step 80: 57591 + 729 = 58320
Step 81: 58320 + 729 = 59049
Step 82: 59049 + 729 = 59778
Step 83: 59778 + 729 = 60507
Step 84: 60507 + 729 = 61236
Step 85: 61236 + 729 = 61965
Step 86: 61965 + 729 = 62694
Step 87: 62694 + 729 = 63423
Step 88: 63423 + 729 = 64152
Step 89: 64152 + 729 = 64881
Step 90: 64881 + 729 = 65610
Step 91: 65610 + 729 = 66339
Step 92: 66339 + 729 = 67068
Step 93: 67068 + 729 = 67797
Step 94: 67797 + 729 = 68526
Step 95: 68526 + 729 = 69255
Step 96: 69255 + 729 = 69984
Step 97: 69984 + 729 = 70713
Step 98: 70713 + 729 = 71442
Step 99: 71442 + 729 = 72171
Step 100: 72171 + 729 = 72900
Step 101: 72900 + 729 = 73629
Step 102: 73629 + 729 = 74358
Step 103: 74358 + 729 = 75087
Step 104: 75087 + 729 = 75816
Step 105: 75816 + 729 = 76545
Step 106: 76545 + 729 = 77274
Step 107: 77274 + 729 = 78003
Step 108: 78003 + 729 = 78732
Step 109: 78732 + 729 = 79461
Step 110: 79461 + 729 = 80190
Step 111: 80190 + 729 = 80919
Step 112: 80919 + 729 = 81648
Step 113: 81648 + 729 = 82377
Step 114: 82377 + 729 = 83106
Step 115: 83106 + 729 = 83835
Step 116: 83835 + 729 = 84564
Step 117: 84564 + 729 = 85293
Step 118: 85293 + 729 = 86022
Step 119: 86022 + 729 = 86751
Step 120: 86751 + 729 = 87480
Step 121: 87480 + 729 = 88209
Step 122: 88209 + 729 = 88938
Step 123: 88938 + 729 = 89667
Step 124: 89667 + 729 = 90396
Step 125: 90396 + 729 = 91125
Step 126: 91125 + 729 = 91854
Step 127: 91854 + 729 = 92583
Step 128: 92583 + 729 = 93312
Step 129: 93312 + 729 = 94041
Step 130: 94041 + 729 = 94770
Step 131: 94770 + 729 = 95499
Step 132: 95499 + 729 = 96228
Step 133: 96228 + 729 = 96957
Step 134: 96957 + 729 = 97686
Step 135: 97686 + 729 = 98415
Step 136: 98415 + 729 = 99144
Step 137: 99144 + 729 = 99873
Step 138: 99873 + 729 = 100602
Step 139: 100602 + 729 = 101331
Step 140: 101331 + 729 = 102060
Step 141: 102060 + 729 = 102789
Step 142: 102789 + 729 = 103518
Step 143: 103518 + 729 = 104247
Step 144: 104247 + 729 = 104976
Step 145: 104976 + 729 = 105705
Step 146: 105705 + 729 = 106434
Step 147: 106434 + 729 = 107163
Step 148: 107163 + 729 = 107892
Step 149: 107892 + 729 = 108621
Step 150: 108621 + 729 = 109350
Step 151: 109350 + 729 = 110079
Step 152: 110079 + 729 = 110808
Step 153: 110808 + 729 = 111537
Step 154: 111537 + 729 = 112266
Step 155: 112266 + 729 = 112995
Step 156: 112995 + 729 = 113724
Step 157: 113724 + 729 = 114453
Step 158: 114453 + 729 = 115182
Step 159: 115182 + 729 = 115911

So, 729*159 = 115911