Becky needs another $1,200 in her vehicle fund to purchase the car she wants.Her parents offer to loan her the money,but want to teach her about the time value of money.They offer to have her repay the loan in the future using birthday and holiday money.They agree that she will repay $450 at each of her next two birthdays and one holiday season.These events are 3,6 and 15 months from now.Assume a 6% cost of capital.Assume there is no risk of default,and that compounding is monthly.What is the NPV of the loan?(Enter just the number without the $ sign or a comma; round off decimals.)求翻译!