Consider a project to supply Detroit with 27,000 tons of machine screws annually for automobile production. You will need an initial $5,300,000 investment in threading equipment to get the project started; the project will last for 6 years. The accounting department estimates that annual fixed costs will be $1,275,000 and that variable costs should be $240 per ton; accounting will depreciate the initial fixed asset investment straight-line to zero over the 6-year project life. It also estimates a salvage value of $650,000 after dismantling costs. The marketing department estimates that the automakers will let the contract at a selling price of $350 per ton. The engineering department estimates you will need an initial net working capital investment of $510,000. You require a return of 14 percent and face a tax rate of 25 percent on this project. 

a-1. What is the estimated OCF for this project? (Do not round intermediate calculations and round your answer to the nearest whole number, e.g., 32.)

 a-2. What is the estimated NPV for this project? (Do not round intermediate calculations and round your answer to 2 decimal places, e.g., 32.16.) 

b. Suppose you believe that the accounting department’s initial cost and salvage value projections are accurate only to within ±5 percent; the marketing department’s price estimate is accurate only to within ±15 percent; and the engineering department’s net working capital estimate is accurate only to within ±10 percent. What are your worst-case and best-case NPVs for this project? (A negative answer should be indicated by a minus sign. Do not round intermediate calculations and round your answers to 2 decimal places, e.g., 32.16.)