Sure thing! We've got 843 and we're gonna multiply it by 5. That's the same as adding 843 to itself 5 times.
Step 1: 0 + 843 = 843
Step 2: 843 + 843 = 1686
Step 3: 1686 + 843 = 2529
Step 4: 2529 + 843 = 3372
Step 5: 3372 + 843 = 4215

So, 843*5 = 4215