An investment has an installed cost of $519,800. The cash flows over the four-year life of the investment are projected to be $229,850, $246,450, $213,110, and $161,820. If the discount rate is zero, what is the NPV? (Omit $ sign in your response.)

If the discount rate is infinite, what is the NPV? (Negative answer should be indicated by a minus sign. Omit $ sign in your response.)

At what discount rate is the NPV just equal to zero? (Round the final answer to 2 decimal places.)