Once you get the overall calculator accuracy, you can press C to redo the process again. I'll get rid of the accuracy checks once I know this 100% works so PLEASE be honest with the answers (and no typos.) :D You can check if the answer given by the project is correct or not by using another calculator to answer the same expression.
Stress. A lot of stress. Oh yeah and whoever invented PEMDAS. Them too of course. NOW WITH ROOTS! use this symbol √ to get a square root, and add a number in brackets in front of it to modify the root! i.e. √64 = 8, √[2]64 = 8, √[3]64 = 4 When it comes to entirely mechanics-based projects like this one, I'm not particularily artsy, so don't mind the bland background :)