A lotto simulator with a twist, you pick the winning numbers and the computer buys the lotto tickets. Anyway, the computer at least generates the tickets and checks how many of them would match the winning numbers you selected. Let's assume you would be the state lotto commissioner and your organization sells 1,000,000 tickets at $1 each and pays out the following:
3 matching numbers = $10
4 matching numbers = $100
5 matching numbers = $5,000
6 matching numbers = $500,000
I leave it up to you to figure out the financials here, and see if you would make a profit after $200,000 of fixed cost.