Create a simple calculator app using Express.
- When a user visits
/add/9/3, it should display 12 - When a user visits
/sub/9/3, it should display 6 - When a user visits
/mult/9/3, it should display 27 - When a user visits
/div/9/3, it should display 3
Bonus Refactor your code to use only one route rather than 4 separate routes.
Other Bonus Handle decimals
Other Other Bonus Style the page. Figure out how to add a stylesheet to an express app!