Can you please help me answer Question #3 using the Cash Flow and Cumulative Date in data set below? Thank you!

Problem Set 9.1 Cash flow Cumulative 0 (550,000) (550,000) 1 100,000 (450,000) 2 260,000 (190,000) 3 380,000 190,000 4 50,000 240,000 1. What is the payback period? 50% 2. What is the IRR? 0.1604 3. What is the NPV (at a discount rate of 5%)? Please show what needs to be entered in excel. Discount Rate 0.05