I'm not very good at finance so I need help with calculations

Colsen Communications is trying to estimate the first-year net operating cash flow (at Year 1) for a proposed project. The financial staff has collected the following information on the project: Sales revenues $25 million Operating costs (excluding depreciation) 17.5 million Depreciation Interest expense 5 million 5 million The company has a 40% tax rate, and its WACC is 10%. Write out your answers completely. For example, 13 million should be entered as 13,000,000. a. What is the project's operating cash flow for the first year (t = 1)? Round your answer to the nearest dollar. b. If this project would cannibalize other projects by $2.5 million of cash flow before taxes per year, how would this change your answer to part a? Round your answer to the nearest dollar. The firm's OCF would now be $ c. Ignore Part b. If the tax rate dropped to 35%, how would that change your answer to part a? Round your answer to the nearest dollar. The firm's operating cash flow by $