A new computer system will require an initial outlay of $20,250, but it will increase the firm's cash flows by $4,500 a year for esch of the next 6 years. a. Calculate the NPV and decide if the system is worth installing if the required rate of return is 8%. Note: Negative amount should be indicated by a minus sign. Do not round intermediate calculations. Round your answers to 2 decimal places. b. Calculate the NPV and decide if the system is worth installing if the required rote of return is 13%. Note: Negative amount should be indicated by a minus sign. Do not round intermediate calculations. Round your answers to 2 decimal places