After a rope is folded in half and then folded in half, each section is 40 meters long. How long is the rope in meters?
一根绳子对折再对折后，每段长40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">40 / (1/4)</gadget>
<output>160</output>

<result>160</result>