Just need (d). Thanks.

Microsoft has 75 million outstanding shares, $130 million in debt, $68 million in cash, and the following projected free cash flow for the next four years: Hint: Excel may make your work a lot easier to compute in this problem (a) Suppose Microsoft's revenue and free cash flow are expected to grow at a 5.7% rate beyond year four. If Microsoft's weighted average cost of capital is 10.0%, what is the value of Microsoft stock based on this information? d) Microsoft's net working capital needs were estimated to be 18% of sales (their current level in year zero). If Microsoft can reduce this requirement to 12% of sales starting in year 1, but all other assumptions are as in (a), what stock price do you estimate for Microsoft? (Hint: This change will have the largest impact on Microsoft's free cash flow in year 1.)