You're trying to determine whether to expand your business by building a new manufacturing plant. The plant has an installation cost of $12 million, which will be depreciated straight-line to zero over its four-year life. If the plant has projected net income of $1,857,000, $1,910,300,$1,878,700, and $1,332,200 over these four years, what is the project's average accounting return (AAR)? (Round the final answer to 2 decimal places.) Average accounting return \%