Without delay, let's solve this. We've got 305 and we will be multiplying it by 5, that is, adding 305 to itself 5 times.
Step 1: 0 + 305 = 305
Step 2: 305 + 305 = 610
Step 3: 610 + 305 = 915
Step 4: 915 + 305 = 1220
Step 5: 1220 + 305 = 1525

So, 305*5 = 1525