A new computer system will require an initial outlay of $18,750, but it will increase the firms cash flows by $4,200 a year for each of the next 6 years. 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. Calculate the NPV and decide if the system is worth installing if the required rate of return is 13%