A proposed cost-saving device has an installed cost of $790,000. 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 $77,000, the marginal tax rate is 21 percent, and the project discount rate is 10 percent. The device has an estimated Year 5 salvage value of $118,000. What level of pretax cost savings do we require for this project to be profitable? MACRS schedule (Do not round intermediate calculations and round your answer to 2 decimal places, e.g., 32.16.) Should you purchase the machine?