Let's say you have a project which will cost $25mm to build or buy. It will product after-tax cash flows of $4mm for 9 years with each cash flow occurring at the end of the year. At the end of the 9 years, you will also receive a residual value payment of $3mm. What is the IRR of the project? Round to the nearest one decimal place and use the % symbol. 6.3% would be the form of a correct answer.