please slove using formula not excel please

Q8. XYZ Ltd. is looking to move to a new technology for its production. The cost of equipment will be $4 million. The company normally uses a discount rate of 12 per cent. Cash flows that the company expects to generate are as follows (10 Marks). Years 0 1-2 3-5 6-9 CF -$4 000 000 0 845 000 1 450 000 a. Calculate the payback and discounted payback period for the project (3 Marks). b. What is the NPV for the project? Should the company go ahead with the project? (3 Marks). What is the IRR, and what would be the decision under the IRR (4 Marks)? c