(1/9) of a rectangular piece of paper is painted red, and (5/9) of it is blue. What percentage of the paper is the uncolored part?
一张长方形的纸它的(1/9)涂红色，它的(5/9)蓝色，没涂色部分占这张纸的几分之几？
<gadget id="calculator">1 / 9</gadget>
<output>1/9 = around 0.111111</output>

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

<gadget id="calculator">(1/9) + (5/9)</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">1 - (2/3)</gadget>
<output>1/3 = around 0.333333</output>

<result>1/3 = around 0.333333</result>