An investment has an installed cost of $535,800. The cash flows over the four-year life of the investment are projected to be $213,850, $230,450, $197,110, and $145,820. If the discount rate is zero, what is the NPV? (Do not round intermediate calculations.) If the discount rate is infinite, what is the NPV? (Negative amount should be indicated by a minus sign.) At what discount rate is the NPV just equal to zero? (Do not round intermediate calculations. Enter your answer as a percent rounded to 2 decimal places, e.g., 32.16.) .