OK, let's crack this. We're given 676 and our task is to multiply it by 5. Essentially, we'll be adding 676 to itself 5 times.
Step 1: 0 + 676 = 676
Step 2: 676 + 676 = 1352
Step 3: 1352 + 676 = 2028
Step 4: 2028 + 676 = 2704
Step 5: 2704 + 676 = 3380

So, 676*5 = 3380