OK, let's crack this. We're given 452 and our task is to multiply it by 9. Essentially, we'll be adding 452 to itself 9 times.
Step 1: 0 + 452 = 452
Step 2: 452 + 452 = 904
Step 3: 904 + 452 = 1356
Step 4: 1356 + 452 = 1808
Step 5: 1808 + 452 = 2260
Step 6: 2260 + 452 = 2712
Step 7: 2712 + 452 = 3164
Step 8: 3164 + 452 = 3616
Step 9: 3616 + 452 = 4068

So, 452*9 = 4068