The Evolution of a Math Problem

This is for those of you like my sister who absolutely love math. :)

The problems start out looking like this:



Then you work the problems like this:



And the final product looks like this:



And for those of you who really like doing problems, here's a fun one. :)

Two numbers, both under 1000, are only one number apart. The lowest common multiple of the two numbers is 996003 more than the higher number. What are the two numbers?

You can leave your answers in the comments, and eventually I'll tell y'all the right answer. :)