My React Calculator

This is my calculator app built with React. If you play with it a bit, you might notice that it doesn't work quite as it should. I'm not happy about the logic errors, but the main reason for this app is to serve a React project from a Django backend. I've accomplished that, so it serves its purpose. That being the case, I'm not going to concern myself with fixing it because I have other more pertinent things to do first.