Let's roll up our sleeves and solve this. We have 499 and we're going to multiply it by 31, essentially adding 499 to itself 31 times.
Step 1: 0 + 499 = 499
Step 2: 499 + 499 = 998
Step 3: 998 + 499 = 1497
Step 4: 1497 + 499 = 1996
Step 5: 1996 + 499 = 2495
Step 6: 2495 + 499 = 2994
Step 7: 2994 + 499 = 3493
Step 8: 3493 + 499 = 3992
Step 9: 3992 + 499 = 4491
Step 10: 4491 + 499 = 4990
Step 11: 4990 + 499 = 5489
Step 12: 5489 + 499 = 5988
Step 13: 5988 + 499 = 6487
Step 14: 6487 + 499 = 6986
Step 15: 6986 + 499 = 7485
Step 16: 7485 + 499 = 7984
Step 17: 7984 + 499 = 8483
Step 18: 8483 + 499 = 8982
Step 19: 8982 + 499 = 9481
Step 20: 9481 + 499 = 9980
Step 21: 9980 + 499 = 10479
Step 22: 10479 + 499 = 10978
Step 23: 10978 + 499 = 11477
Step 24: 11477 + 499 = 11976
Step 25: 11976 + 499 = 12475
Step 26: 12475 + 499 = 12974
Step 27: 12974 + 499 = 13473
Step 28: 13473 + 499 = 13972
Step 29: 13972 + 499 = 14471
Step 30: 14471 + 499 = 14970
Step 31: 14970 + 499 = 15469

So, 499*31 = 15469