(2/9) of a piece of rectangular paper is painted red, and (5/9) is painted green. What percentage of the paper is uncolored?
一张长方形纸的(2/9)涂红色，(5/9)涂绿色．没涂色的占这张纸的几分之几？
<gadget id="calculator">2 / 9</gadget>
<output>2/9 = around 0.222222</output>

<gadget id="calculator">5 / 9</gadget>
<output>5/9 = around 0.555556</output>

<gadget id="calculator">1 - (2/9) - (5/9)</gadget>
<output>2/9 = around 0.222222</output>

<result>2/9 = around 0.222222</result>