Hello, I am working in this excersice but not sure about the OCF. Can you help me out?

Lee Inc. purchases a digital color printer for $280,000 to launch its 5-year publishing project. (11%) This printer will be fully depreciated by the straight-line method over its 7-year economic life, and will be sold for $60,000 at the termination of the 5-year project. The variable costs are $26 per copy, and annual fixed costs are $80,000. The unit selling price of the book is $32. The marginal tax rate is 35%, the inflation rate is 3%, and the discount rate is 14%. This project requires an initial net working capital requirement of $50,000 that can be fully recovered at the termination of the project. (a) Compute the annual operating cash flow for this 5-year publishing project to break even in valuation, i.e., OCFBE. (b) Use your answer for OCFBE in part (a) to compute the minimum number of copies needed to be sold annually for this 5-year publishing project to break even in valuation