Alright, let's solve this math problem step by step. First, we have the number 812. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 105. So, we're going to take the number 812 and add it to itself 105 times.
Step 1: 0 + 812 = 812
Step 2: 812 + 812 = 1624
Step 3: 1624 + 812 = 2436
Step 4: 2436 + 812 = 3248
Step 5: 3248 + 812 = 4060
Step 6: 4060 + 812 = 4872
Step 7: 4872 + 812 = 5684
Step 8: 5684 + 812 = 6496
Step 9: 6496 + 812 = 7308
Step 10: 7308 + 812 = 8120
Step 11: 8120 + 812 = 8932
Step 12: 8932 + 812 = 9744
Step 13: 9744 + 812 = 10556
Step 14: 10556 + 812 = 11368
Step 15: 11368 + 812 = 12180
Step 16: 12180 + 812 = 12992
Step 17: 12992 + 812 = 13804
Step 18: 13804 + 812 = 14616
Step 19: 14616 + 812 = 15428
Step 20: 15428 + 812 = 16240
Step 21: 16240 + 812 = 17052
Step 22: 17052 + 812 = 17864
Step 23: 17864 + 812 = 18676
Step 24: 18676 + 812 = 19488
Step 25: 19488 + 812 = 20300
Step 26: 20300 + 812 = 21112
Step 27: 21112 + 812 = 21924
Step 28: 21924 + 812 = 22736
Step 29: 22736 + 812 = 23548
Step 30: 23548 + 812 = 24360
Step 31: 24360 + 812 = 25172
Step 32: 25172 + 812 = 25984
Step 33: 25984 + 812 = 26796
Step 34: 26796 + 812 = 27608
Step 35: 27608 + 812 = 28420
Step 36: 28420 + 812 = 29232
Step 37: 29232 + 812 = 30044
Step 38: 30044 + 812 = 30856
Step 39: 30856 + 812 = 31668
Step 40: 31668 + 812 = 32480
Step 41: 32480 + 812 = 33292
Step 42: 33292 + 812 = 34104
Step 43: 34104 + 812 = 34916
Step 44: 34916 + 812 = 35728
Step 45: 35728 + 812 = 36540
Step 46: 36540 + 812 = 37352
Step 47: 37352 + 812 = 38164
Step 48: 38164 + 812 = 38976
Step 49: 38976 + 812 = 39788
Step 50: 39788 + 812 = 40600
Step 51: 40600 + 812 = 41412
Step 52: 41412 + 812 = 42224
Step 53: 42224 + 812 = 43036
Step 54: 43036 + 812 = 43848
Step 55: 43848 + 812 = 44660
Step 56: 44660 + 812 = 45472
Step 57: 45472 + 812 = 46284
Step 58: 46284 + 812 = 47096
Step 59: 47096 + 812 = 47908
Step 60: 47908 + 812 = 48720
Step 61: 48720 + 812 = 49532
Step 62: 49532 + 812 = 50344
Step 63: 50344 + 812 = 51156
Step 64: 51156 + 812 = 51968
Step 65: 51968 + 812 = 52780
Step 66: 52780 + 812 = 53592
Step 67: 53592 + 812 = 54404
Step 68: 54404 + 812 = 55216
Step 69: 55216 + 812 = 56028
Step 70: 56028 + 812 = 56840
Step 71: 56840 + 812 = 57652
Step 72: 57652 + 812 = 58464
Step 73: 58464 + 812 = 59276
Step 74: 59276 + 812 = 60088
Step 75: 60088 + 812 = 60900
Step 76: 60900 + 812 = 61712
Step 77: 61712 + 812 = 62524
Step 78: 62524 + 812 = 63336
Step 79: 63336 + 812 = 64148
Step 80: 64148 + 812 = 64960
Step 81: 64960 + 812 = 65772
Step 82: 65772 + 812 = 66584
Step 83: 66584 + 812 = 67396
Step 84: 67396 + 812 = 68208
Step 85: 68208 + 812 = 69020
Step 86: 69020 + 812 = 69832
Step 87: 69832 + 812 = 70644
Step 88: 70644 + 812 = 71456
Step 89: 71456 + 812 = 72268
Step 90: 72268 + 812 = 73080
Step 91: 73080 + 812 = 73892
Step 92: 73892 + 812 = 74704
Step 93: 74704 + 812 = 75516
Step 94: 75516 + 812 = 76328
Step 95: 76328 + 812 = 77140
Step 96: 77140 + 812 = 77952
Step 97: 77952 + 812 = 78764
Step 98: 78764 + 812 = 79576
Step 99: 79576 + 812 = 80388
Step 100: 80388 + 812 = 81200
Step 101: 81200 + 812 = 82012
Step 102: 82012 + 812 = 82824
Step 103: 82824 + 812 = 83636
Step 104: 83636 + 812 = 84448
Step 105: 84448 + 812 = 85260

So, 812*105 = 85260