Alright, let's solve this math problem step by step. First, we have the number 391. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 24. So, we're going to take the number 391 and add it to itself 24 times.
Step 1: 0 + 391 = 391
Step 2: 391 + 391 = 782
Step 3: 782 + 391 = 1173
Step 4: 1173 + 391 = 1564
Step 5: 1564 + 391 = 1955
Step 6: 1955 + 391 = 2346
Step 7: 2346 + 391 = 2737
Step 8: 2737 + 391 = 3128
Step 9: 3128 + 391 = 3519
Step 10: 3519 + 391 = 3910
Step 11: 3910 + 391 = 4301
Step 12: 4301 + 391 = 4692
Step 13: 4692 + 391 = 5083
Step 14: 5083 + 391 = 5474
Step 15: 5474 + 391 = 5865
Step 16: 5865 + 391 = 6256
Step 17: 6256 + 391 = 6647
Step 18: 6647 + 391 = 7038
Step 19: 7038 + 391 = 7429
Step 20: 7429 + 391 = 7820
Step 21: 7820 + 391 = 8211
Step 22: 8211 + 391 = 8602
Step 23: 8602 + 391 = 8993
Step 24: 8993 + 391 = 9384

So, 391*24 = 9384