An investment has an installed cost of $567,382. The cash flows over the four-year life of the investment are projected to be $196,584, $240,318, $188,674, and $156,313. Requirement 1: If the discount rate is zero, what is the NPV? (Do not round intermediate calculations.) NPV $ Requirement 2: If the discount rate is infinite, what is the NPV? (Do not round intermediate calculations. Negative amount should be indicated by a minus sign.) NPV $ Requirement 3: At what discount rate is the NPV just equal to zero? (Do not round intermediate calculations. Enter your answer as a percentage rounded to 2 decimal places (e.g., 32.16).) Discount rate %