Emmanuelme76/calculadora_git_dvc ? reverse-engineered prompt

Build me a simple Python calculator project that lets a user do the basic math operations, like add, subtract, multiply, and divide, from the command line or by running the main script.

I also want the project set up in a clean way so it can keep example input or output files in a data folder, and use DVC for tracking that data if needed. Make it easy to run, easy to understand, and organized so someone can open it and immediately see how it works.

If it helps, include a small script or two in the scripts folder for running or testing things, and make sure the main calculator file actually works without extra hassle. If you need to look up current docs online for anything related to DVC or best practices, go ahead and do that.