Alright, let's solve this math problem step by step. First, we have the number 819. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 72. So, we're going to take the number 819 and add it to itself 72 times.
Step 1: 0 + 819 = 819
Step 2: 819 + 819 = 1638
Step 3: 1638 + 819 = 2457
Step 4: 2457 + 819 = 3276
Step 5: 3276 + 819 = 4095
Step 6: 4095 + 819 = 4914
Step 7: 4914 + 819 = 5733
Step 8: 5733 + 819 = 6552
Step 9: 6552 + 819 = 7371
Step 10: 7371 + 819 = 8190
Step 11: 8190 + 819 = 9009
Step 12: 9009 + 819 = 9828
Step 13: 9828 + 819 = 10647
Step 14: 10647 + 819 = 11466
Step 15: 11466 + 819 = 12285
Step 16: 12285 + 819 = 13104
Step 17: 13104 + 819 = 13923
Step 18: 13923 + 819 = 14742
Step 19: 14742 + 819 = 15561
Step 20: 15561 + 819 = 16380
Step 21: 16380 + 819 = 17199
Step 22: 17199 + 819 = 18018
Step 23: 18018 + 819 = 18837
Step 24: 18837 + 819 = 19656
Step 25: 19656 + 819 = 20475
Step 26: 20475 + 819 = 21294
Step 27: 21294 + 819 = 22113
Step 28: 22113 + 819 = 22932
Step 29: 22932 + 819 = 23751
Step 30: 23751 + 819 = 24570
Step 31: 24570 + 819 = 25389
Step 32: 25389 + 819 = 26208
Step 33: 26208 + 819 = 27027
Step 34: 27027 + 819 = 27846
Step 35: 27846 + 819 = 28665
Step 36: 28665 + 819 = 29484
Step 37: 29484 + 819 = 30303
Step 38: 30303 + 819 = 31122
Step 39: 31122 + 819 = 31941
Step 40: 31941 + 819 = 32760
Step 41: 32760 + 819 = 33579
Step 42: 33579 + 819 = 34398
Step 43: 34398 + 819 = 35217
Step 44: 35217 + 819 = 36036
Step 45: 36036 + 819 = 36855
Step 46: 36855 + 819 = 37674
Step 47: 37674 + 819 = 38493
Step 48: 38493 + 819 = 39312
Step 49: 39312 + 819 = 40131
Step 50: 40131 + 819 = 40950
Step 51: 40950 + 819 = 41769
Step 52: 41769 + 819 = 42588
Step 53: 42588 + 819 = 43407
Step 54: 43407 + 819 = 44226
Step 55: 44226 + 819 = 45045
Step 56: 45045 + 819 = 45864
Step 57: 45864 + 819 = 46683
Step 58: 46683 + 819 = 47502
Step 59: 47502 + 819 = 48321
Step 60: 48321 + 819 = 49140
Step 61: 49140 + 819 = 49959
Step 62: 49959 + 819 = 50778
Step 63: 50778 + 819 = 51597
Step 64: 51597 + 819 = 52416
Step 65: 52416 + 819 = 53235
Step 66: 53235 + 819 = 54054
Step 67: 54054 + 819 = 54873
Step 68: 54873 + 819 = 55692
Step 69: 55692 + 819 = 56511
Step 70: 56511 + 819 = 57330
Step 71: 57330 + 819 = 58149
Step 72: 58149 + 819 = 58968

So, 819*72 = 58968