A firm is planning to install new equipment to the existing manufacturing facility to improve production efficiency. The equipment costs $1,000,000, which will be depreciated straight line to zero over its five-year life. The investment is expected to generate net incomes of $40,000, $50,000, $70,000, $90,000, and $100,000 for year 1, year 2, year 3, year 4, and year 5, respectively. Calculate the average accounting return (AAR).