Without delay, let's solve this. We've got 880 and we will be multiplying it by 5, that is, adding 880 to itself 5 times.
Step 1: 0 + 880 = 880
Step 2: 880 + 880 = 1760
Step 3: 1760 + 880 = 2640
Step 4: 2640 + 880 = 3520
Step 5: 3520 + 880 = 4400

So, 880*5 = 4400