Actually, for the last two years before striking out on my own, I ended up working on a project involving complex calculations with credit derivatives. And befo

Actually, for the last two years before striking out on my own, I ended up working on a project involving complex calculations with credit derivatives. And before, I created a side project implementing risk models such as Black Scholes, Monte Carlo, etc. So the math ended up being useful after all. But yeah, I think even none of the things you learn in college end up being useful to you in "real world", it's all about problem solving techniques you master that apply in any situation.