After folding a square paper in half three times, one of the unfolded pieces is ((())/(())) of this paper.
将一张正方形的纸对折3次后，展开后其中一份是这张纸的((())/(()))．
<gadget id="calculator">2 * 2 * 2</gadget>
<output>8</output>

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

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