- Remix the program. Read and run it to make sure you understand what it does. - Refactor the code to use a function with a parameter (input). This new function should be used to cut down on duplication and make the code easier to follow. Be sure the code still does the same thing overall. - The user is only supposed to enter 3, 5, 7, or 9 at the beginning. Add code that tells the user if they entered an improper value. Then the code below should only run if they entered a proper value.