Sure thing! We've got 387 and we're gonna multiply it by 4. That's the same as adding 387 to itself 4 times.
Step 1: 0 + 387 = 387
Step 2: 387 + 387 = 774
Step 3: 774 + 387 = 1161
Step 4: 1161 + 387 = 1548

So, 387*4 = 1548