A piece of rectangular paper, red coloring accounts for (3/8), blue coloring accounts for (1/8), what percentage of the paper is not colored?
一张长方形纸，涂红色占(3/8)，涂蓝色占(1/8)，没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">1 - (3/8) - (1/8)</gadget>
<output>1/2 = around 0.5</output>

<result>1/2 = around 0.5</result>