App doesn't look right on a tablet screen

When using the app on a tablet, it uses the whole screen by stretching the UI as much as possible in order to fit the entire screen, which looks odd...

This is the first time I've ever posted any issues on github ever in my entire life and i have absolutely no idea of how to attach pictures to things so here's an imgur link that shows exactly what i mean

https://imgur.com/a/calculators-so-cool-8C6eAFA

I think the best way to fix that would be either by making the extra options be extended by default on the left side of the screen while on a wide enough screen, or by adding the history on the left side of the screen, kinda like what the Google Calculator does (which i also added an example of in the imgur link)