### A lottery has one $2000 prize, two $1000 prizes

I need help in figuring out how to do this math problem. I've worked on the equation multiple times and can't seem to figure it out. The question again is: A lottery has one $2000 prize, two $1000 prizes, and ten $500 prizes. Two thousand tickets are sold at $5 each. Find the expectation if a person buys two tickets.