Liking the game very much!
But why do the cheese sales do not count towards the salary (even though it's not milk, it's made out of it)?
the girls only played a part in making the milk, so they get paid based on the price of the milk. You made the effort of turning it into cheese, so that's 100% on you.
Think of it like this - someone working in a factory producing nails doesn't get paid again when those nails are used to build something.