Let's roll up our sleeves and solve this. We have 814 and we're going to multiply it by 5, essentially adding 814 to itself 5 times.
Step 1: 0 + 814 = 814
Step 2: 814 + 814 = 1628
Step 3: 1628 + 814 = 2442
Step 4: 2442 + 814 = 3256
Step 5: 3256 + 814 = 4070

So, 814*5 = 4070