Let's get this math done. We have 16 and we're going to multiply it by 9. This is the same as taking 16 and adding it to itself 9 times.
Step 1: 0 + 16 = 16
Step 2: 16 + 16 = 32
Step 3: 32 + 16 = 48
Step 4: 48 + 16 = 64
Step 5: 64 + 16 = 80
Step 6: 80 + 16 = 96
Step 7: 96 + 16 = 112
Step 8: 112 + 16 = 128
Step 9: 128 + 16 = 144

So, 16*9 = 144