If a rope is folded twice and its length is 50 meters, what is the length of the rope in meters?
将一根绳子对折两次后长度是50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">50 / (1/4)</gadget>
<output>200</output>

<result>200</result>