show me the formula as well please

Fool Proof Software is considering a new project whose data are shown below. The equipment that will be used has a 3-year class life and will be depreciated by the MACRS depreciation system. Revenues and Cash operating costs are expected to be constant oyer the project's 10-year life. 1What is the Year 1 after-tax net operating cash ow? Enter your answer rounded to two decimal places. Do not enter $ or comma in the answer box. For example, if your answer is $12,300.456 then enter as 1230.4 in the answer box. Equipment cost {depreciable basis} $35.00 Sales reyenues. each year $6. Cash operating costs $29.00 Tax rate 25.0%