Sure thing! We've got 250 and we're gonna multiply it by 4. That's the same as adding 250 to itself 4 times.
Step 1: 0 + 250 = 250
Step 2: 250 + 250 = 500
Step 3: 500 + 250 = 750
Step 4: 750 + 250 = 1000

So, 250*4 = 1000