Let's get this math done. We have 24 and we're going to multiply it by 9. This is the same as taking 24 and adding it to itself 9 times.
Step 1: 0 + 24 = 24
Step 2: 24 + 24 = 48
Step 3: 48 + 24 = 72
Step 4: 72 + 24 = 96
Step 5: 96 + 24 = 120
Step 6: 120 + 24 = 144
Step 7: 144 + 24 = 168
Step 8: 168 + 24 = 192
Step 9: 192 + 24 = 216

So, 24*9 = 216