(1/8) of a piece of rectangular paper is painted red, and (4/8) is painted blue. What fraction of the rectangle of paper is uncolored?
一张长方形纸的(1/8)涂红色，(4/8)涂蓝色．没涂色的部分占这张长方形纸的几分之几？
<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">4 / 8</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1 - (1/8) - (1/2)</gadget>
<output>3/8 = around 0.375</output>

<result>3/8 = around 0.375</result>