Alright, let's solve this math problem step by step. First, we have the number 797. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 9. So, we're going to take the number 797 and add it to itself 9 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
Step 8: 5579 + 797 = 6376
Step 9: 6376 + 797 = 7173

So, 797*9 = 7173