Sure thing, let's get straight to it. We start with 812 and we're going to multiply it by 5, which means adding 812 to itself 5 times.
Step 1: 0 + 812 = 812
Step 2: 812 + 812 = 1624
Step 3: 1624 + 812 = 2436
Step 4: 2436 + 812 = 3248
Step 5: 3248 + 812 = 4060

So, 812*5 = 4060