OK, let's crack this. We're given 124 and our task is to multiply it by 18. Essentially, we'll be adding 124 to itself 18 times.
Step 1: 0 + 124 = 124
Step 2: 124 + 124 = 248
Step 3: 248 + 124 = 372
Step 4: 372 + 124 = 496
Step 5: 496 + 124 = 620
Step 6: 620 + 124 = 744
Step 7: 744 + 124 = 868
Step 8: 868 + 124 = 992
Step 9: 992 + 124 = 1116
Step 10: 1116 + 124 = 1240
Step 11: 1240 + 124 = 1364
Step 12: 1364 + 124 = 1488
Step 13: 1488 + 124 = 1612
Step 14: 1612 + 124 = 1736
Step 15: 1736 + 124 = 1860
Step 16: 1860 + 124 = 1984
Step 17: 1984 + 124 = 2108
Step 18: 2108 + 124 = 2232

So, 124*18 = 2232