Let's roll up our sleeves and solve this. We have 239 and we're going to multiply it by 4, essentially adding 239 to itself 4 times.
Step 1: 0 + 239 = 239
Step 2: 239 + 239 = 478
Step 3: 478 + 239 = 717
Step 4: 717 + 239 = 956

So, 239*4 = 956