A rectangular piece of paper is folded in half consecutively 3 times, one of which is the size of the paper.
一张长方形的纸，连续对折3次，其中的一份是这张纸的多少．
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(1/2) * (1/2) * (1/2)</gadget>
<output>1/8 = around 0.125</output>

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