A company is analyzing a 15-year project which requires an initial investment of $200 million. From the whole period, this project requires an annual expense at the end of each year. For the first 6 years, the annual expense will be $10 million, and for the next 9 years, the expense will be $5 million. From the 6th year to the 15th year, the project will generate an arithmetically increasing annual revenue at the end of each year: $10 million at the end of the 6th year, $20 million at the end of the 7th year, . . ., and $100 million at the end of the last year. Assume that the best alternative investment provides is an interest of 0.5% per month compounded semiannually. Check whether this project is acceptable using the ERR method.