Without delay, let's solve this. We've got 940 and we will be multiplying it by 3, that is, adding 940 to itself 3 times.
Step 1: 0 + 940 = 940
Step 2: 940 + 940 = 1880
Step 3: 1880 + 940 = 2820

So, 940*3 = 2820