This challenge is to build your own calculator. It could be a command line tool, desktop application or web based.

To complete this challenge you’ll need to parse a mathematical expression and then perform the relevant calculations before returning the answer to the user.

For example, the user will be able to input: 2 * 3 + 4 and get back 10, or input 10 / (6 - 1) and get back 2.

Completing this challenge will give you the chance to make use of the stack data structure in a real-world application.