A company is considering the purchase of a universal grinding machine. The following table sets out a forecast of the annual accounting profit: Revenues Costs a Pretax profit $ 430,000 300,000 130,000 32,500 $ 97,500 Tax at 25% After-tax profit aNote: costs include depreciation of $90,000. Calculate the operating cash flow using the three methods set out in Equations (6.3A), (6.3B), and (6.3C).