. Suppose that you are given an opportunity to work in Tokyo over the summer as an English tutor, and you are provided with all living expenses and a 500,000-yen cash stipend that you plan to save and bring home. If the exchange rate is 120 yen per U.S. dollar, how much is your stipend worth in dollars if you exchanged your money right away? Suppose you predict that the exchange rate will change in the next few months to 110 yen per U.S. dollar. Would you receive more dollars if you exchange the yen now or later? Show your calculations.