Alright, let's solve this math problem step by step. First, we have the number 502. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 150. So, we're going to take the number 502 and add it to itself 150 times.
Step 1: 0 + 502 = 502
Step 2: 502 + 502 = 1004
Step 3: 1004 + 502 = 1506
Step 4: 1506 + 502 = 2008
Step 5: 2008 + 502 = 2510
Step 6: 2510 + 502 = 3012
Step 7: 3012 + 502 = 3514
Step 8: 3514 + 502 = 4016
Step 9: 4016 + 502 = 4518
Step 10: 4518 + 502 = 5020
Step 11: 5020 + 502 = 5522
Step 12: 5522 + 502 = 6024
Step 13: 6024 + 502 = 6526
Step 14: 6526 + 502 = 7028
Step 15: 7028 + 502 = 7530
Step 16: 7530 + 502 = 8032
Step 17: 8032 + 502 = 8534
Step 18: 8534 + 502 = 9036
Step 19: 9036 + 502 = 9538
Step 20: 9538 + 502 = 10040
Step 21: 10040 + 502 = 10542
Step 22: 10542 + 502 = 11044
Step 23: 11044 + 502 = 11546
Step 24: 11546 + 502 = 12048
Step 25: 12048 + 502 = 12550
Step 26: 12550 + 502 = 13052
Step 27: 13052 + 502 = 13554
Step 28: 13554 + 502 = 14056
Step 29: 14056 + 502 = 14558
Step 30: 14558 + 502 = 15060
Step 31: 15060 + 502 = 15562
Step 32: 15562 + 502 = 16064
Step 33: 16064 + 502 = 16566
Step 34: 16566 + 502 = 17068
Step 35: 17068 + 502 = 17570
Step 36: 17570 + 502 = 18072
Step 37: 18072 + 502 = 18574
Step 38: 18574 + 502 = 19076
Step 39: 19076 + 502 = 19578
Step 40: 19578 + 502 = 20080
Step 41: 20080 + 502 = 20582
Step 42: 20582 + 502 = 21084
Step 43: 21084 + 502 = 21586
Step 44: 21586 + 502 = 22088
Step 45: 22088 + 502 = 22590
Step 46: 22590 + 502 = 23092
Step 47: 23092 + 502 = 23594
Step 48: 23594 + 502 = 24096
Step 49: 24096 + 502 = 24598
Step 50: 24598 + 502 = 25100
Step 51: 25100 + 502 = 25602
Step 52: 25602 + 502 = 26104
Step 53: 26104 + 502 = 26606
Step 54: 26606 + 502 = 27108
Step 55: 27108 + 502 = 27610
Step 56: 27610 + 502 = 28112
Step 57: 28112 + 502 = 28614
Step 58: 28614 + 502 = 29116
Step 59: 29116 + 502 = 29618
Step 60: 29618 + 502 = 30120
Step 61: 30120 + 502 = 30622
Step 62: 30622 + 502 = 31124
Step 63: 31124 + 502 = 31626
Step 64: 31626 + 502 = 32128
Step 65: 32128 + 502 = 32630
Step 66: 32630 + 502 = 33132
Step 67: 33132 + 502 = 33634
Step 68: 33634 + 502 = 34136
Step 69: 34136 + 502 = 34638
Step 70: 34638 + 502 = 35140
Step 71: 35140 + 502 = 35642
Step 72: 35642 + 502 = 36144
Step 73: 36144 + 502 = 36646
Step 74: 36646 + 502 = 37148
Step 75: 37148 + 502 = 37650
Step 76: 37650 + 502 = 38152
Step 77: 38152 + 502 = 38654
Step 78: 38654 + 502 = 39156
Step 79: 39156 + 502 = 39658
Step 80: 39658 + 502 = 40160
Step 81: 40160 + 502 = 40662
Step 82: 40662 + 502 = 41164
Step 83: 41164 + 502 = 41666
Step 84: 41666 + 502 = 42168
Step 85: 42168 + 502 = 42670
Step 86: 42670 + 502 = 43172
Step 87: 43172 + 502 = 43674
Step 88: 43674 + 502 = 44176
Step 89: 44176 + 502 = 44678
Step 90: 44678 + 502 = 45180
Step 91: 45180 + 502 = 45682
Step 92: 45682 + 502 = 46184
Step 93: 46184 + 502 = 46686
Step 94: 46686 + 502 = 47188
Step 95: 47188 + 502 = 47690
Step 96: 47690 + 502 = 48192
Step 97: 48192 + 502 = 48694
Step 98: 48694 + 502 = 49196
Step 99: 49196 + 502 = 49698
Step 100: 49698 + 502 = 50200
Step 101: 50200 + 502 = 50702
Step 102: 50702 + 502 = 51204
Step 103: 51204 + 502 = 51706
Step 104: 51706 + 502 = 52208
Step 105: 52208 + 502 = 52710
Step 106: 52710 + 502 = 53212
Step 107: 53212 + 502 = 53714
Step 108: 53714 + 502 = 54216
Step 109: 54216 + 502 = 54718
Step 110: 54718 + 502 = 55220
Step 111: 55220 + 502 = 55722
Step 112: 55722 + 502 = 56224
Step 113: 56224 + 502 = 56726
Step 114: 56726 + 502 = 57228
Step 115: 57228 + 502 = 57730
Step 116: 57730 + 502 = 58232
Step 117: 58232 + 502 = 58734
Step 118: 58734 + 502 = 59236
Step 119: 59236 + 502 = 59738
Step 120: 59738 + 502 = 60240
Step 121: 60240 + 502 = 60742
Step 122: 60742 + 502 = 61244
Step 123: 61244 + 502 = 61746
Step 124: 61746 + 502 = 62248
Step 125: 62248 + 502 = 62750
Step 126: 62750 + 502 = 63252
Step 127: 63252 + 502 = 63754
Step 128: 63754 + 502 = 64256
Step 129: 64256 + 502 = 64758
Step 130: 64758 + 502 = 65260
Step 131: 65260 + 502 = 65762
Step 132: 65762 + 502 = 66264
Step 133: 66264 + 502 = 66766
Step 134: 66766 + 502 = 67268
Step 135: 67268 + 502 = 67770
Step 136: 67770 + 502 = 68272
Step 137: 68272 + 502 = 68774
Step 138: 68774 + 502 = 69276
Step 139: 69276 + 502 = 69778
Step 140: 69778 + 502 = 70280
Step 141: 70280 + 502 = 70782
Step 142: 70782 + 502 = 71284
Step 143: 71284 + 502 = 71786
Step 144: 71786 + 502 = 72288
Step 145: 72288 + 502 = 72790
Step 146: 72790 + 502 = 73292
Step 147: 73292 + 502 = 73794
Step 148: 73794 + 502 = 74296
Step 149: 74296 + 502 = 74798
Step 150: 74798 + 502 = 75300

So, 502*150 = 75300