After folding a rope in half, fold it in half again. At this time, each fold is 1 meter long. How many meters is the length of the rope?
把一根绳子对折以后，再对折，这时每折长1米，这根绳子长多少米．
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

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

<result>4</result>