Let's roll up our sleeves and solve this. We have 756 and we're going to multiply it by 5, essentially adding 756 to itself 5 times.
Step 1: 0 + 756 = 756
Step 2: 756 + 756 = 1512
Step 3: 1512 + 756 = 2268
Step 4: 2268 + 756 = 3024
Step 5: 3024 + 756 = 3780

So, 756*5 = 3780