Sure thing! We've got 139 and we're gonna multiply it by 4. That's the same as adding 139 to itself 4 times.
Step 1: 0 + 139 = 139
Step 2: 139 + 139 = 278
Step 3: 278 + 139 = 417
Step 4: 417 + 139 = 556

So, 139*4 = 556