Let's roll up our sleeves and solve this. We have 422 and we're going to multiply it by 4, essentially adding 422 to itself 4 times.
Step 1: 0 + 422 = 422
Step 2: 422 + 422 = 844
Step 3: 844 + 422 = 1266
Step 4: 1266 + 422 = 1688

So, 422*4 = 1688