Let's roll up our sleeves and solve this. We have 957 and we're going to multiply it by 4, essentially adding 957 to itself 4 times.
Step 1: 0 + 957 = 957
Step 2: 957 + 957 = 1914
Step 3: 1914 + 957 = 2871
Step 4: 2871 + 957 = 3828

So, 957*4 = 3828