Without delay, let's solve this. We've got 570 and we will be multiplying it by 4, that is, adding 570 to itself 4 times.
Step 1: 0 + 570 = 570
Step 2: 570 + 570 = 1140
Step 3: 1140 + 570 = 1710
Step 4: 1710 + 570 = 2280

So, 570*4 = 2280