Without delay, let's solve this. We've got 907 and we will be multiplying it by 5, that is, adding 907 to itself 5 times.
Step 1: 0 + 907 = 907
Step 2: 907 + 907 = 1814
Step 3: 1814 + 907 = 2721
Step 4: 2721 + 907 = 3628
Step 5: 3628 + 907 = 4535

So, 907*5 = 4535