Ti datamath ii calculator

All credit for this code, the video and hard work belongs to Israel Dryer. His GitHub repository is located here: https://github.com/israel-dryer

This calculator was developed as part of a YouTube tutorial. You can watch the video that describes how to make this calculator here:

https://youtu.be/x5LSTDdffFk

The GitHub location for the source can be found here:

https://github.com/israel-dryer/PyDataMath-II