Alright, let's solve this math problem step by step. First, we have the number 791. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 26. So, we're going to take the number 791 and add it to itself 26 times.
Step 1: 0 + 791 = 791
Step 2: 791 + 791 = 1582
Step 3: 1582 + 791 = 2373
Step 4: 2373 + 791 = 3164
Step 5: 3164 + 791 = 3955
Step 6: 3955 + 791 = 4746
Step 7: 4746 + 791 = 5537
Step 8: 5537 + 791 = 6328
Step 9: 6328 + 791 = 7119
Step 10: 7119 + 791 = 7910
Step 11: 7910 + 791 = 8701
Step 12: 8701 + 791 = 9492
Step 13: 9492 + 791 = 10283
Step 14: 10283 + 791 = 11074
Step 15: 11074 + 791 = 11865
Step 16: 11865 + 791 = 12656
Step 17: 12656 + 791 = 13447
Step 18: 13447 + 791 = 14238
Step 19: 14238 + 791 = 15029
Step 20: 15029 + 791 = 15820
Step 21: 15820 + 791 = 16611
Step 22: 16611 + 791 = 17402
Step 23: 17402 + 791 = 18193
Step 24: 18193 + 791 = 18984
Step 25: 18984 + 791 = 19775
Step 26: 19775 + 791 = 20566

So, 791*26 = 20566