Without delay, let's solve this. We've got 240 and we will be multiplying it by 7, that is, adding 240 to itself 7 times.
Step 1: 0 + 240 = 240
Step 2: 240 + 240 = 480
Step 3: 480 + 240 = 720
Step 4: 720 + 240 = 960
Step 5: 960 + 240 = 1200
Step 6: 1200 + 240 = 1440
Step 7: 1440 + 240 = 1680

So, 240*7 = 1680