Paint (1/8) of a rectangular paper with red, (3/8) with blue, and paint as much purple as blue. What percentage of the paper is not colored?
把一张长方形纸的(1/8)涂上红色，(3/8)涂上蓝色，涂紫色和涂蓝色的一样多，没有涂色的占这张纸的几分之几？
<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">(3/8) + (3/8) + (1/8)</gadget>
<output>7/8 = around 0.875</output>

<gadget id="calculator">1 - (7/8)</gadget>
<output>1/8 = around 0.125</output>

<result>1/8 = around 0.125</result>