Alright, let's work through 5003 times 8011 step by step
5003 × 8011 = 8011 × (5003)
+ 8011 × 3 that equals 24033
+ 8011 × 00 producing 0
+ 8011 × 000 which equals 0
+ 8011 × 5000 yielding 40055000

= 40079033
