Alright, let's solve this math problem step by step. First, we have the number 509. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 141. So, we're going to take the number 509 and add it to itself 141 times.
Step 1: 0 + 509 = 509
Step 2: 509 + 509 = 1018
Step 3: 1018 + 509 = 1527
Step 4: 1527 + 509 = 2036
Step 5: 2036 + 509 = 2545
Step 6: 2545 + 509 = 3054
Step 7: 3054 + 509 = 3563
Step 8: 3563 + 509 = 4072
Step 9: 4072 + 509 = 4581
Step 10: 4581 + 509 = 5090
Step 11: 5090 + 509 = 5599
Step 12: 5599 + 509 = 6108
Step 13: 6108 + 509 = 6617
Step 14: 6617 + 509 = 7126
Step 15: 7126 + 509 = 7635
Step 16: 7635 + 509 = 8144
Step 17: 8144 + 509 = 8653
Step 18: 8653 + 509 = 9162
Step 19: 9162 + 509 = 9671
Step 20: 9671 + 509 = 10180
Step 21: 10180 + 509 = 10689
Step 22: 10689 + 509 = 11198
Step 23: 11198 + 509 = 11707
Step 24: 11707 + 509 = 12216
Step 25: 12216 + 509 = 12725
Step 26: 12725 + 509 = 13234
Step 27: 13234 + 509 = 13743
Step 28: 13743 + 509 = 14252
Step 29: 14252 + 509 = 14761
Step 30: 14761 + 509 = 15270
Step 31: 15270 + 509 = 15779
Step 32: 15779 + 509 = 16288
Step 33: 16288 + 509 = 16797
Step 34: 16797 + 509 = 17306
Step 35: 17306 + 509 = 17815
Step 36: 17815 + 509 = 18324
Step 37: 18324 + 509 = 18833
Step 38: 18833 + 509 = 19342
Step 39: 19342 + 509 = 19851
Step 40: 19851 + 509 = 20360
Step 41: 20360 + 509 = 20869
Step 42: 20869 + 509 = 21378
Step 43: 21378 + 509 = 21887
Step 44: 21887 + 509 = 22396
Step 45: 22396 + 509 = 22905
Step 46: 22905 + 509 = 23414
Step 47: 23414 + 509 = 23923
Step 48: 23923 + 509 = 24432
Step 49: 24432 + 509 = 24941
Step 50: 24941 + 509 = 25450
Step 51: 25450 + 509 = 25959
Step 52: 25959 + 509 = 26468
Step 53: 26468 + 509 = 26977
Step 54: 26977 + 509 = 27486
Step 55: 27486 + 509 = 27995
Step 56: 27995 + 509 = 28504
Step 57: 28504 + 509 = 29013
Step 58: 29013 + 509 = 29522
Step 59: 29522 + 509 = 30031
Step 60: 30031 + 509 = 30540
Step 61: 30540 + 509 = 31049
Step 62: 31049 + 509 = 31558
Step 63: 31558 + 509 = 32067
Step 64: 32067 + 509 = 32576
Step 65: 32576 + 509 = 33085
Step 66: 33085 + 509 = 33594
Step 67: 33594 + 509 = 34103
Step 68: 34103 + 509 = 34612
Step 69: 34612 + 509 = 35121
Step 70: 35121 + 509 = 35630
Step 71: 35630 + 509 = 36139
Step 72: 36139 + 509 = 36648
Step 73: 36648 + 509 = 37157
Step 74: 37157 + 509 = 37666
Step 75: 37666 + 509 = 38175
Step 76: 38175 + 509 = 38684
Step 77: 38684 + 509 = 39193
Step 78: 39193 + 509 = 39702
Step 79: 39702 + 509 = 40211
Step 80: 40211 + 509 = 40720
Step 81: 40720 + 509 = 41229
Step 82: 41229 + 509 = 41738
Step 83: 41738 + 509 = 42247
Step 84: 42247 + 509 = 42756
Step 85: 42756 + 509 = 43265
Step 86: 43265 + 509 = 43774
Step 87: 43774 + 509 = 44283
Step 88: 44283 + 509 = 44792
Step 89: 44792 + 509 = 45301
Step 90: 45301 + 509 = 45810
Step 91: 45810 + 509 = 46319
Step 92: 46319 + 509 = 46828
Step 93: 46828 + 509 = 47337
Step 94: 47337 + 509 = 47846
Step 95: 47846 + 509 = 48355
Step 96: 48355 + 509 = 48864
Step 97: 48864 + 509 = 49373
Step 98: 49373 + 509 = 49882
Step 99: 49882 + 509 = 50391
Step 100: 50391 + 509 = 50900
Step 101: 50900 + 509 = 51409
Step 102: 51409 + 509 = 51918
Step 103: 51918 + 509 = 52427
Step 104: 52427 + 509 = 52936
Step 105: 52936 + 509 = 53445
Step 106: 53445 + 509 = 53954
Step 107: 53954 + 509 = 54463
Step 108: 54463 + 509 = 54972
Step 109: 54972 + 509 = 55481
Step 110: 55481 + 509 = 55990
Step 111: 55990 + 509 = 56499
Step 112: 56499 + 509 = 57008
Step 113: 57008 + 509 = 57517
Step 114: 57517 + 509 = 58026
Step 115: 58026 + 509 = 58535
Step 116: 58535 + 509 = 59044
Step 117: 59044 + 509 = 59553
Step 118: 59553 + 509 = 60062
Step 119: 60062 + 509 = 60571
Step 120: 60571 + 509 = 61080
Step 121: 61080 + 509 = 61589
Step 122: 61589 + 509 = 62098
Step 123: 62098 + 509 = 62607
Step 124: 62607 + 509 = 63116
Step 125: 63116 + 509 = 63625
Step 126: 63625 + 509 = 64134
Step 127: 64134 + 509 = 64643
Step 128: 64643 + 509 = 65152
Step 129: 65152 + 509 = 65661
Step 130: 65661 + 509 = 66170
Step 131: 66170 + 509 = 66679
Step 132: 66679 + 509 = 67188
Step 133: 67188 + 509 = 67697
Step 134: 67697 + 509 = 68206
Step 135: 68206 + 509 = 68715
Step 136: 68715 + 509 = 69224
Step 137: 69224 + 509 = 69733
Step 138: 69733 + 509 = 70242
Step 139: 70242 + 509 = 70751
Step 140: 70751 + 509 = 71260
Step 141: 71260 + 509 = 71769

So, 509*141 = 71769