Sure thing! We've got 451 and we're gonna multiply it by 4. That's the same as adding 451 to itself 4 times.
Step 1: 0 + 451 = 451
Step 2: 451 + 451 = 902
Step 3: 902 + 451 = 1353
Step 4: 1353 + 451 = 1804

So, 451*4 = 1804