Please explain the steps

The Airbus A220 has the following investments in R&D in millions, all negative cash flows) $200M (year 1) $250M (year 2) $100M (year 3) Each plane will be sold for $21M - 15% down and 85% due on delivery two years later. The cost to produce each plane is $14.5M - these costs are recognized on delivery. The Sales and Marketing Department says that you will sell 25 planes (year 4), 30 planes (year 5), 50 planes/year (years 6-10), and 70 planes (year 11). What are the NPV (as of the beginning of year 1) and the IRR of the A220 using an 8.5% discount rate? XC Accent BA Confo ACY Accent 2 Act Com Accent Curve R romat B12 B C D F F 0 H 1 K L MN A Sale price (MS) per plane 2 Down payment (96) 3 Cost per plane (MS) 4 Discount rate 5 Years 1 2 4 5 Z 8 8 9 10 11 12 7 Hofplanes sold $ Ernestment 9 Revens 10 Production Costs Cash Flow 12 NPV 13 IRR 15 16