b) A proposed cost-saving device has an installed cost of $ 730,000. 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 $55,000, the marginal tax rate is 35 percent, and the project discount rate is 9 percent. The device has an estimated Year 5 salvage value of $80,000. What level of pretax cost savings do we require for this project to be profitable