There is a rope 72 meters long, fold it in half three times, what is the length of the rope in meters now?
有一根72米长的绳子，将它对折3次，现在绳子长是多少米．
<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">72 * (1/8)</gadget>
<output>9</output>

<result>9</result>