19. Your grandfather has some extra money lying around and he is considering investing in something that will pay $2,218 per month in perpetuity. If the required return is 6.11%, how much should he be willing to pay for it today? 20. You want to purchase a car that costs $30,589. You can afford $1,505 as a down payment and will borrow the rest. The bank has offered you a rate of 3.64% on a 4-year loan. What is your monthly payment? 21. You borrowed $27,797 to buy a car. If you pay $407 per month, you will pay it off after making 62 payments. If you pay $40 more each month, you will pay it off 6 months sooner. How much total interest will you save? 22. You borrowed $20,939 to buy a car. If you pay $365 per month, you will pay it off after making 65 payments. How much total interest will you pay? 23. You took out a 4-year loan loan of $13,891. Your monthly payment is $314.81, How much total interest will you pay? 24. A preferred stock will pay a dividend of $2 per year. If the annual return is 6.89%, what is the stock worth today?