OK, let's crack this. We're given 548 and our task is to multiply it by 9. Essentially, we'll be adding 548 to itself 9 times.
Step 1: 0 + 548 = 548
Step 2: 548 + 548 = 1096
Step 3: 1096 + 548 = 1644
Step 4: 1644 + 548 = 2192
Step 5: 2192 + 548 = 2740
Step 6: 2740 + 548 = 3288
Step 7: 3288 + 548 = 3836
Step 8: 3836 + 548 = 4384
Step 9: 4384 + 548 = 4932

So, 548*9 = 4932