Problem 07.042 - hand calculation of mirr method with constant cash flows the martian corporation, a space vehicle development company, is starting a new division that will develop the next-generation launch missile engine configuration. use a hand application of the mirr method to determine the eror for the estimated net cash flows (in $1000 units) of $-54,000 in year 0, $15,000 in years 1 through 7, and $-8,000 in year 8. assume a borrowing rate of 15% and an investment rate of 29% per year. the external rate of return is %.