Fold a rope in four, and then fold the rope in three. The four-fold is 2 meters shorter than the three-fold. How long is the rope?
把一条绳子四折，又把这条绳子三折，量得四折比三折短2米，问绳子长几米？
<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">1 / 16</gadget>
<output>1/16 = around 0.0625</output>

<gadget id="calculator">(1/8) - (1/16)</gadget>
<output>1/16 = around 0.0625</output>

<gadget id="calculator">2 / (1/16)</gadget>
<output>32</output>

<result>32</result>