9. A British company will receive a payment of US$1 million in one month and will pay a payment of US$1 million in three months. The spot exchange rate in the market is: GBP/USD=1.6670/80, and the 3-month price difference is: 30/20, the 1-month spread is 10/15, and the company’s swap cost or benefit is calculated. 10． An importer in the United States needs to pay 13 million yen after 2 months (62 days). Known: USD/JPY=128.50/65 Money market interest rate: 2-month USD 7.625~7.563; JPY 5.75~5.625 Calculate the forward exchange rate of USD/JPY. 11. On March 20, an arbitrageur bought 10 six-month pound futures contracts in the international currency market at a price of 1GBP = 01.63USD, and at the same time sold 10 futures contracts in the London international financial market at a price of 1GBP = 1.65USD. A 6-month pound futures contract, what was the trading result? 12. The trader believes that the exchange rate of the U.S. dollar against the Japanese yen may fall in the near future, so he buys a U.S. dollar put option with a transaction amount of 10 million U.S. dollars, an execution price of USD1=JPY110.00, a validity period of 1 month, and an option price of 1.7%. (1) Try to calculate the break-even point. (2) Calculate the trader's profit and loss when the market exchange rate is higher or lower than 110.00.