Sure thing, let's get straight to it. We start with 677 and we're going to multiply it by 5, which means adding 677 to itself 5 times.
Step 1: 0 + 677 = 677
Step 2: 677 + 677 = 1354
Step 3: 1354 + 677 = 2031
Step 4: 2031 + 677 = 2708
Step 5: 2708 + 677 = 3385

So, 677*5 = 3385