I CANNOT FIND SOLUTION FOR C, is not 8.718 either...please help

Soved PC Shopping Network may upgrade its modem pool. It last upgraded 2 years ago, when it spent $155 million on equipment with ar assumed life of 5 years and an assumed salvage value of $25 million for tax purposes. The firm uses straight-line depreciation. The equipment can be sold today for $110 million. A new modem pool can be installed today for $180 million. This will have a 3-year life and will be depreciated to zero using straight-line depreciation. The new equipment will enable the firm to increase sales by $24 million per year and decrease operating costs by $12 million per year. At the end of 3 years, the new equipment will be worthless. Assume the firm's tax rate is 30% and the discount rate for projects of this sort is 15%. Required: a. What is the net cash flow at time of the old equipment is replaced? (Negative amounts should be indicated by a minus sign. Do not round intermediate calculations. Enter your answer in millions rounded to 2 decimal places.) b. What are the incremental cash flows in years (0) 1: (11) 2: (113? (Do not round intermediate calculations. Enter your answer in millions rounded to 2 decimal places.) c. What is the NPV of the replacement project? (Do not round Intermediate calculations. Enter the NPV in millions rounded to 2 decimal places.) d. What is the IRR of the replacement project? (Do not round Intermediate calculations. Enter the IRR as a percent rounded to 2 decimal places.) b. Not cash flow Incremental cash flow NPV IRR $ $ $ (72.45) million 43.20 million per year 26.19 million 35.84 % c. d