Without delay, let's solve this. We've got 797 and we will be multiplying it by 7, that is, adding 797 to itself 7 times.
Step 1: 0 + 797 = 797
Step 2: 797 + 797 = 1594
Step 3: 1594 + 797 = 2391
Step 4: 2391 + 797 = 3188
Step 5: 3188 + 797 = 3985
Step 6: 3985 + 797 = 4782
Step 7: 4782 + 797 = 5579

So, 797*7 = 5579