A rope is folded in half twice and its length is 3.5 meters. What is the original length of the rope in meters?
一根绳子对折两次后，量得长度是3.5米，这根绳子原来的长度是多少米米．
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">3.5 / (1/4)</gadget>
<output>14</output>

<result>14</result>