Without delay, let's solve this. We've got 677 and we will be multiplying it by 4, that is, adding 677 to itself 4 times.
Step 1: 0 + 677 = 677
Step 2: 677 + 677 = 1354
Step 3: 1354 + 677 = 2031
Step 4: 2031 + 677 = 2708

So, 677*4 = 2708