OK, let's crack this. We're given 2 and our task is to multiply it by 9. Essentially, we'll be adding 2 to itself 9 times.
Step 1: 0 + 2 = 2
Step 2: 2 + 2 = 4
Step 3: 4 + 2 = 6
Step 4: 6 + 2 = 8
Step 5: 8 + 2 = 10
Step 6: 10 + 2 = 12
Step 7: 12 + 2 = 14
Step 8: 14 + 2 = 16
Step 9: 16 + 2 = 18

So, 2*9 = 18