Without delay, let's solve this. We've got 350 and we will be multiplying it by 4, that is, adding 350 to itself 4 times.
Step 1: 0 + 350 = 350
Step 2: 350 + 350 = 700
Step 3: 700 + 350 = 1050
Step 4: 1050 + 350 = 1400

So, 350*4 = 1400