You would like lo buy a house that costs S350,000. You have S50,000 in cash that you can put down on the house, but you need to borrow the rest of the purchase price. The bank is offering you a 30-year mortgage that requires annual payments and has an interest rate of 9% per year. You can afford to pay only S28,320 per year. The bank agrees to allow you to pay this amount each year, yet still borrow S300,000. At the end of the mortgage (in 30 years), you must make a balloon payment; that is, you must repay the remaining balance on the mortgage. How much will be this balloon payment