Aproposed cost-saving device has an installed cost of $780,000. the device will be used in a five-year project but is classified as three-year macrs property for tax purposes. the required initial net working capital investment is $73,000, the marginal tax rate is 24 percent, and the project discount rate is 8 percent. the device has an estimated year 5 salvage value of $112,000. what level of pretax cost savings do we require for this project to be profitable? (do not round intermediate calculations and round your answer to 2 decimal places, e. g., 32.16.)