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 $$1,857,300,$ $$1,910,600,$ $$1,879,000,$ and $$1,332,500$ over these four years, what is the project$$s average accounting return $($AAR$)?($Round the final answer to $2$ decimal places.$)$

Average accounting return $\%$