Denis is currently unemployed and wants to become the manager of Roberto's Restaurant. To become a manager in Roberto's Restaurant, Denis first has to serve as a cook there. To become a cook in Roberto's Restaurant, he first has to serve as a waiter there. Denis has a $60\%$ chance of being hired as a waiter. If he becomes a waiter, he has a $50\%$ chance of being promoted to cook. If he becomes a cook, he has a $40\%$ chance of being promoted to manager. At Roberto's Restaurant, managers get paid $\$25$ per hour, cooks get paid $\$15$ per hour, and waiters get paid $\$10$ per hour. If Denis stays unemployed, he will make $\$0$ per hour. **What is the expected hourly payoff of Denis's plan to seek employment at Roberto's Restaurant?** Round your answer to the nearest cent. $\$$ [[☃ input-number 1]] per hour