This stupid calculator will display how much you've made since you've clicked the green flag, defined to a specific hourly rate. This is very unprecise, as it does not use a real-time clock to calculate, and instead relies on a "wait a specific time", which over time can run slower than it actually should.
I made this back in 2016, but I wanted to release it nevertheless to showcase a little bit of coding history. Back when I knew nothing of error handling.