Without delay, let's solve this. We've got 139 and we will be multiplying it by 7, that is, adding 139 to itself 7 times.
Step 1: 0 + 139 = 139
Step 2: 139 + 139 = 278
Step 3: 278 + 139 = 417
Step 4: 417 + 139 = 556
Step 5: 556 + 139 = 695
Step 6: 695 + 139 = 834
Step 7: 834 + 139 = 973

So, 139*7 = 973