Fold a 3-meter-long rope in half 3 times, what is the total length of each piece of rope
把3米长的绳子对折3次，每段绳子是全长的多少
<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

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