I wrote an online attendance system for my school, which often come with way more features than we need and cost in the range of $50k. It's not $2 million, but $50k is a teacher's salary. In education, that's huge. It took me 2 weeks to set up, and another 4 weeks of testing with teachers to iron out all of the bugs, but now it is used every day by all of our teachers.

I've also used my ability to code to develop learning apps for my students. It's been incredibly valuable in my career.