Without delay, let's solve this. We've got 249 and we will be multiplying it by 75, that is, adding 249 to itself 75 times.
Step 1: 0 + 249 = 249
Step 2: 249 + 249 = 498
Step 3: 498 + 249 = 747
Step 4: 747 + 249 = 996
Step 5: 996 + 249 = 1245
Step 6: 1245 + 249 = 1494
Step 7: 1494 + 249 = 1743
Step 8: 1743 + 249 = 1992
Step 9: 1992 + 249 = 2241
Step 10: 2241 + 249 = 2490
Step 11: 2490 + 249 = 2739
Step 12: 2739 + 249 = 2988
Step 13: 2988 + 249 = 3237
Step 14: 3237 + 249 = 3486
Step 15: 3486 + 249 = 3735
Step 16: 3735 + 249 = 3984
Step 17: 3984 + 249 = 4233
Step 18: 4233 + 249 = 4482
Step 19: 4482 + 249 = 4731
Step 20: 4731 + 249 = 4980
Step 21: 4980 + 249 = 5229
Step 22: 5229 + 249 = 5478
Step 23: 5478 + 249 = 5727
Step 24: 5727 + 249 = 5976
Step 25: 5976 + 249 = 6225
Step 26: 6225 + 249 = 6474
Step 27: 6474 + 249 = 6723
Step 28: 6723 + 249 = 6972
Step 29: 6972 + 249 = 7221
Step 30: 7221 + 249 = 7470
Step 31: 7470 + 249 = 7719
Step 32: 7719 + 249 = 7968
Step 33: 7968 + 249 = 8217
Step 34: 8217 + 249 = 8466
Step 35: 8466 + 249 = 8715
Step 36: 8715 + 249 = 8964
Step 37: 8964 + 249 = 9213
Step 38: 9213 + 249 = 9462
Step 39: 9462 + 249 = 9711
Step 40: 9711 + 249 = 9960
Step 41: 9960 + 249 = 10209
Step 42: 10209 + 249 = 10458
Step 43: 10458 + 249 = 10707
Step 44: 10707 + 249 = 10956
Step 45: 10956 + 249 = 11205
Step 46: 11205 + 249 = 11454
Step 47: 11454 + 249 = 11703
Step 48: 11703 + 249 = 11952
Step 49: 11952 + 249 = 12201
Step 50: 12201 + 249 = 12450
Step 51: 12450 + 249 = 12699
Step 52: 12699 + 249 = 12948
Step 53: 12948 + 249 = 13197
Step 54: 13197 + 249 = 13446
Step 55: 13446 + 249 = 13695
Step 56: 13695 + 249 = 13944
Step 57: 13944 + 249 = 14193
Step 58: 14193 + 249 = 14442
Step 59: 14442 + 249 = 14691
Step 60: 14691 + 249 = 14940
Step 61: 14940 + 249 = 15189
Step 62: 15189 + 249 = 15438
Step 63: 15438 + 249 = 15687
Step 64: 15687 + 249 = 15936
Step 65: 15936 + 249 = 16185
Step 66: 16185 + 249 = 16434
Step 67: 16434 + 249 = 16683
Step 68: 16683 + 249 = 16932
Step 69: 16932 + 249 = 17181
Step 70: 17181 + 249 = 17430
Step 71: 17430 + 249 = 17679
Step 72: 17679 + 249 = 17928
Step 73: 17928 + 249 = 18177
Step 74: 18177 + 249 = 18426
Step 75: 18426 + 249 = 18675

So, 249*75 = 18675