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 $1,856,400, $1,909,700,$1,878,100, and $1,331,600 over these four years, what is the project's average accounting return (AAR)? (Round the final answer to 2 decimal places.) Average accounting return %