Please answer the question using excel and excel formulas such as =price

A project will generate sales of 2,000 units annually at a sales price of $35 each. Fixed costs are $14,000 and the variable costs per unit are $8. The project requires $$5,000 of fixed assets that will be depreciated on a straight-line basis to a zero book value over the four-year life of the project. The salvage value of the fixed assets is $8,500 and the tax rate is 21%. What is the operating cash flow for Year 4