Alright, let's solve this math problem step by step. First, we have the number 724. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 140. So, we're going to take the number 724 and add it to itself 140 times.
Step 1: 0 + 724 = 724
Step 2: 724 + 724 = 1448
Step 3: 1448 + 724 = 2172
Step 4: 2172 + 724 = 2896
Step 5: 2896 + 724 = 3620
Step 6: 3620 + 724 = 4344
Step 7: 4344 + 724 = 5068
Step 8: 5068 + 724 = 5792
Step 9: 5792 + 724 = 6516
Step 10: 6516 + 724 = 7240
Step 11: 7240 + 724 = 7964
Step 12: 7964 + 724 = 8688
Step 13: 8688 + 724 = 9412
Step 14: 9412 + 724 = 10136
Step 15: 10136 + 724 = 10860
Step 16: 10860 + 724 = 11584
Step 17: 11584 + 724 = 12308
Step 18: 12308 + 724 = 13032
Step 19: 13032 + 724 = 13756
Step 20: 13756 + 724 = 14480
Step 21: 14480 + 724 = 15204
Step 22: 15204 + 724 = 15928
Step 23: 15928 + 724 = 16652
Step 24: 16652 + 724 = 17376
Step 25: 17376 + 724 = 18100
Step 26: 18100 + 724 = 18824
Step 27: 18824 + 724 = 19548
Step 28: 19548 + 724 = 20272
Step 29: 20272 + 724 = 20996
Step 30: 20996 + 724 = 21720
Step 31: 21720 + 724 = 22444
Step 32: 22444 + 724 = 23168
Step 33: 23168 + 724 = 23892
Step 34: 23892 + 724 = 24616
Step 35: 24616 + 724 = 25340
Step 36: 25340 + 724 = 26064
Step 37: 26064 + 724 = 26788
Step 38: 26788 + 724 = 27512
Step 39: 27512 + 724 = 28236
Step 40: 28236 + 724 = 28960
Step 41: 28960 + 724 = 29684
Step 42: 29684 + 724 = 30408
Step 43: 30408 + 724 = 31132
Step 44: 31132 + 724 = 31856
Step 45: 31856 + 724 = 32580
Step 46: 32580 + 724 = 33304
Step 47: 33304 + 724 = 34028
Step 48: 34028 + 724 = 34752
Step 49: 34752 + 724 = 35476
Step 50: 35476 + 724 = 36200
Step 51: 36200 + 724 = 36924
Step 52: 36924 + 724 = 37648
Step 53: 37648 + 724 = 38372
Step 54: 38372 + 724 = 39096
Step 55: 39096 + 724 = 39820
Step 56: 39820 + 724 = 40544
Step 57: 40544 + 724 = 41268
Step 58: 41268 + 724 = 41992
Step 59: 41992 + 724 = 42716
Step 60: 42716 + 724 = 43440
Step 61: 43440 + 724 = 44164
Step 62: 44164 + 724 = 44888
Step 63: 44888 + 724 = 45612
Step 64: 45612 + 724 = 46336
Step 65: 46336 + 724 = 47060
Step 66: 47060 + 724 = 47784
Step 67: 47784 + 724 = 48508
Step 68: 48508 + 724 = 49232
Step 69: 49232 + 724 = 49956
Step 70: 49956 + 724 = 50680
Step 71: 50680 + 724 = 51404
Step 72: 51404 + 724 = 52128
Step 73: 52128 + 724 = 52852
Step 74: 52852 + 724 = 53576
Step 75: 53576 + 724 = 54300
Step 76: 54300 + 724 = 55024
Step 77: 55024 + 724 = 55748
Step 78: 55748 + 724 = 56472
Step 79: 56472 + 724 = 57196
Step 80: 57196 + 724 = 57920
Step 81: 57920 + 724 = 58644
Step 82: 58644 + 724 = 59368
Step 83: 59368 + 724 = 60092
Step 84: 60092 + 724 = 60816
Step 85: 60816 + 724 = 61540
Step 86: 61540 + 724 = 62264
Step 87: 62264 + 724 = 62988
Step 88: 62988 + 724 = 63712
Step 89: 63712 + 724 = 64436
Step 90: 64436 + 724 = 65160
Step 91: 65160 + 724 = 65884
Step 92: 65884 + 724 = 66608
Step 93: 66608 + 724 = 67332
Step 94: 67332 + 724 = 68056
Step 95: 68056 + 724 = 68780
Step 96: 68780 + 724 = 69504
Step 97: 69504 + 724 = 70228
Step 98: 70228 + 724 = 70952
Step 99: 70952 + 724 = 71676
Step 100: 71676 + 724 = 72400
Step 101: 72400 + 724 = 73124
Step 102: 73124 + 724 = 73848
Step 103: 73848 + 724 = 74572
Step 104: 74572 + 724 = 75296
Step 105: 75296 + 724 = 76020
Step 106: 76020 + 724 = 76744
Step 107: 76744 + 724 = 77468
Step 108: 77468 + 724 = 78192
Step 109: 78192 + 724 = 78916
Step 110: 78916 + 724 = 79640
Step 111: 79640 + 724 = 80364
Step 112: 80364 + 724 = 81088
Step 113: 81088 + 724 = 81812
Step 114: 81812 + 724 = 82536
Step 115: 82536 + 724 = 83260
Step 116: 83260 + 724 = 83984
Step 117: 83984 + 724 = 84708
Step 118: 84708 + 724 = 85432
Step 119: 85432 + 724 = 86156
Step 120: 86156 + 724 = 86880
Step 121: 86880 + 724 = 87604
Step 122: 87604 + 724 = 88328
Step 123: 88328 + 724 = 89052
Step 124: 89052 + 724 = 89776
Step 125: 89776 + 724 = 90500
Step 126: 90500 + 724 = 91224
Step 127: 91224 + 724 = 91948
Step 128: 91948 + 724 = 92672
Step 129: 92672 + 724 = 93396
Step 130: 93396 + 724 = 94120
Step 131: 94120 + 724 = 94844
Step 132: 94844 + 724 = 95568
Step 133: 95568 + 724 = 96292
Step 134: 96292 + 724 = 97016
Step 135: 97016 + 724 = 97740
Step 136: 97740 + 724 = 98464
Step 137: 98464 + 724 = 99188
Step 138: 99188 + 724 = 99912
Step 139: 99912 + 724 = 100636
Step 140: 100636 + 724 = 101360

So, 724*140 = 101360