i need a breakdown of how to do 16 and 17 by hand

16) A firm requires an investment of $25,000 and will return $36,500 after 1 year. If the firm borrows $20,000 at 7%, what is the return on levered equity? 16) A) 202% B) 242% C) 283% D) 162% 17) Suppose a project financed via an issue of debt requires six annual interest payments of $18 million each year. If the tax rate is 35% and the cost of debt is 8%, what is the value of the interest rate tax shield? 17). Ay$29.12 million B) $23.30 million C) $34.95 million D) $58.25 million