Let's roll up our sleeves and solve this. We have 550 and we're going to multiply it by 3, essentially adding 550 to itself 3 times.
Step 1: 0 + 550 = 550
Step 2: 550 + 550 = 1100
Step 3: 1100 + 550 = 1650

So, 550*3 = 1650