A rope is folded in half three times and its length is (1/4) meter. What is the original length of the rope?
一根绳子对折三次后是(1/4)米，这根绳子原长多少米．
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

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

<gadget id="calculator">(1/4) / (1/8)</gadget>
<output>2</output>

<result>2</result>