Let's roll up our sleeves and solve this. We have 653 and we're going to multiply it by 4, essentially adding 653 to itself 4 times.
Step 1: 0 + 653 = 653
Step 2: 653 + 653 = 1306
Step 3: 1306 + 653 = 1959
Step 4: 1959 + 653 = 2612

So, 653*4 = 2612