Please show all work and formulas! Thanks

3. The following I/S is based on the information associated with a new project. Projected Income Statements We invest $3,000,000 to get started. The residual book value of the new equipment is zero at Year 4 while it will be sold for $300,000. Moreover, we save $50,000 in the net working capital (NWC) at the beginning of the project. The tax rate is 40%. 1) Figure out Operating Cash Flow (OCF). (30points) 2) Figure out Change in NWC at Year 0 and Year 4. respectively. (30points) 3) Figure out After-Tax Salvage at Year 4. (30points) 4) Figure out Net Present Value (NPV) if the required return is 20%. (40points) 5) Figure out Profitability Index (PI) if the required return is 15% (40points) 6) Figure out the Internal Rate of Return (IRR). (40points) 7) Figure out the Discounted Payback period if the required return is 20%. (40points)