Lennon, Inc. is considering a five-year project that has an initial outlay or cost of $80,000. The respective future cash inflows from its project for years 1, 2, 3, 4 and 5 are: $15,000, $25,000, $45,000, $45,000, and $55,000. Lennon uses the internal rate of return method to evaluate projects. What is Lennon's IRR? Please show step by step, I do not know how to separate R from the formula.