Alright, let's solve this math problem step by step. First, we have the number 847. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 80. So, we're going to take the number 847 and add it to itself 80 times.
Step 1: 0 + 847 = 847
Step 2: 847 + 847 = 1694
Step 3: 1694 + 847 = 2541
Step 4: 2541 + 847 = 3388
Step 5: 3388 + 847 = 4235
Step 6: 4235 + 847 = 5082
Step 7: 5082 + 847 = 5929
Step 8: 5929 + 847 = 6776
Step 9: 6776 + 847 = 7623
Step 10: 7623 + 847 = 8470
Step 11: 8470 + 847 = 9317
Step 12: 9317 + 847 = 10164
Step 13: 10164 + 847 = 11011
Step 14: 11011 + 847 = 11858
Step 15: 11858 + 847 = 12705
Step 16: 12705 + 847 = 13552
Step 17: 13552 + 847 = 14399
Step 18: 14399 + 847 = 15246
Step 19: 15246 + 847 = 16093
Step 20: 16093 + 847 = 16940
Step 21: 16940 + 847 = 17787
Step 22: 17787 + 847 = 18634
Step 23: 18634 + 847 = 19481
Step 24: 19481 + 847 = 20328
Step 25: 20328 + 847 = 21175
Step 26: 21175 + 847 = 22022
Step 27: 22022 + 847 = 22869
Step 28: 22869 + 847 = 23716
Step 29: 23716 + 847 = 24563
Step 30: 24563 + 847 = 25410
Step 31: 25410 + 847 = 26257
Step 32: 26257 + 847 = 27104
Step 33: 27104 + 847 = 27951
Step 34: 27951 + 847 = 28798
Step 35: 28798 + 847 = 29645
Step 36: 29645 + 847 = 30492
Step 37: 30492 + 847 = 31339
Step 38: 31339 + 847 = 32186
Step 39: 32186 + 847 = 33033
Step 40: 33033 + 847 = 33880
Step 41: 33880 + 847 = 34727
Step 42: 34727 + 847 = 35574
Step 43: 35574 + 847 = 36421
Step 44: 36421 + 847 = 37268
Step 45: 37268 + 847 = 38115
Step 46: 38115 + 847 = 38962
Step 47: 38962 + 847 = 39809
Step 48: 39809 + 847 = 40656
Step 49: 40656 + 847 = 41503
Step 50: 41503 + 847 = 42350
Step 51: 42350 + 847 = 43197
Step 52: 43197 + 847 = 44044
Step 53: 44044 + 847 = 44891
Step 54: 44891 + 847 = 45738
Step 55: 45738 + 847 = 46585
Step 56: 46585 + 847 = 47432
Step 57: 47432 + 847 = 48279
Step 58: 48279 + 847 = 49126
Step 59: 49126 + 847 = 49973
Step 60: 49973 + 847 = 50820
Step 61: 50820 + 847 = 51667
Step 62: 51667 + 847 = 52514
Step 63: 52514 + 847 = 53361
Step 64: 53361 + 847 = 54208
Step 65: 54208 + 847 = 55055
Step 66: 55055 + 847 = 55902
Step 67: 55902 + 847 = 56749
Step 68: 56749 + 847 = 57596
Step 69: 57596 + 847 = 58443
Step 70: 58443 + 847 = 59290
Step 71: 59290 + 847 = 60137
Step 72: 60137 + 847 = 60984
Step 73: 60984 + 847 = 61831
Step 74: 61831 + 847 = 62678
Step 75: 62678 + 847 = 63525
Step 76: 63525 + 847 = 64372
Step 77: 64372 + 847 = 65219
Step 78: 65219 + 847 = 66066
Step 79: 66066 + 847 = 66913
Step 80: 66913 + 847 = 67760

So, 847*80 = 67760