can somebosy help with all three approches

Riya Ltdhas projected a sales volume of $1,432 for the second year of a proposed expansion project. Costs normally run 70% of sales, or about $1,002 in this case. The capital cost allowance will be $80, and the tax rate is 40%. What is the operating cash flow? Calculate your answer using the top down, bottom up and the tax shield approaches.