Maintenance money for an athletic complex has been sought. Mr. Kendall, Athletic Director, would like to solicit a donation to cover all future expected maintenance costs for the building. These maintenance costs are expected to be $1.3 million each year for the first five years, $1.6 million each year for years 6 through 10, and $1.9 million each year after that. (The building has an indefinite service life.) If the money is placed in an account that will pay 4% interest compounded annually, how large should the gift be?

Answer: 43.73 million