You have $100,000 to invest in either Stock D, Stock F, or a risk-free asset. You must invest all of your money. Your goal is to create a portfolio that has an expected return of 11.5 percent. Assume D has an expected return of 15 percent, F has an expected return of 10.9 percent, and the risk-free rate is 6 percent. If you invest $50,000 in Stock D, how much will you invest in Stock F? (Do not round intermediate calculations and round your answer to 2 decimal places, e.g., 32.16.) Amount of Stock F to buy $ ________