Without delay, let's solve this. We've got 412 and we will be multiplying it by 75, that is, adding 412 to itself 75 times.
Step 1: 0 + 412 = 412
Step 2: 412 + 412 = 824
Step 3: 824 + 412 = 1236
Step 4: 1236 + 412 = 1648
Step 5: 1648 + 412 = 2060
Step 6: 2060 + 412 = 2472
Step 7: 2472 + 412 = 2884
Step 8: 2884 + 412 = 3296
Step 9: 3296 + 412 = 3708
Step 10: 3708 + 412 = 4120
Step 11: 4120 + 412 = 4532
Step 12: 4532 + 412 = 4944
Step 13: 4944 + 412 = 5356
Step 14: 5356 + 412 = 5768
Step 15: 5768 + 412 = 6180
Step 16: 6180 + 412 = 6592
Step 17: 6592 + 412 = 7004
Step 18: 7004 + 412 = 7416
Step 19: 7416 + 412 = 7828
Step 20: 7828 + 412 = 8240
Step 21: 8240 + 412 = 8652
Step 22: 8652 + 412 = 9064
Step 23: 9064 + 412 = 9476
Step 24: 9476 + 412 = 9888
Step 25: 9888 + 412 = 10300
Step 26: 10300 + 412 = 10712
Step 27: 10712 + 412 = 11124
Step 28: 11124 + 412 = 11536
Step 29: 11536 + 412 = 11948
Step 30: 11948 + 412 = 12360
Step 31: 12360 + 412 = 12772
Step 32: 12772 + 412 = 13184
Step 33: 13184 + 412 = 13596
Step 34: 13596 + 412 = 14008
Step 35: 14008 + 412 = 14420
Step 36: 14420 + 412 = 14832
Step 37: 14832 + 412 = 15244
Step 38: 15244 + 412 = 15656
Step 39: 15656 + 412 = 16068
Step 40: 16068 + 412 = 16480
Step 41: 16480 + 412 = 16892
Step 42: 16892 + 412 = 17304
Step 43: 17304 + 412 = 17716
Step 44: 17716 + 412 = 18128
Step 45: 18128 + 412 = 18540
Step 46: 18540 + 412 = 18952
Step 47: 18952 + 412 = 19364
Step 48: 19364 + 412 = 19776
Step 49: 19776 + 412 = 20188
Step 50: 20188 + 412 = 20600
Step 51: 20600 + 412 = 21012
Step 52: 21012 + 412 = 21424
Step 53: 21424 + 412 = 21836
Step 54: 21836 + 412 = 22248
Step 55: 22248 + 412 = 22660
Step 56: 22660 + 412 = 23072
Step 57: 23072 + 412 = 23484
Step 58: 23484 + 412 = 23896
Step 59: 23896 + 412 = 24308
Step 60: 24308 + 412 = 24720
Step 61: 24720 + 412 = 25132
Step 62: 25132 + 412 = 25544
Step 63: 25544 + 412 = 25956
Step 64: 25956 + 412 = 26368
Step 65: 26368 + 412 = 26780
Step 66: 26780 + 412 = 27192
Step 67: 27192 + 412 = 27604
Step 68: 27604 + 412 = 28016
Step 69: 28016 + 412 = 28428
Step 70: 28428 + 412 = 28840
Step 71: 28840 + 412 = 29252
Step 72: 29252 + 412 = 29664
Step 73: 29664 + 412 = 30076
Step 74: 30076 + 412 = 30488
Step 75: 30488 + 412 = 30900

So, 412*75 = 30900