A rope, cut off (3/8), there are 25 meters left, how long is this rope?
一条绳子，截去(3/8)，还剩25米，这条绳子有多长？
<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">1 - (3/8)</gadget>
<output>5/8 = around 0.625</output>

<gadget id="calculator">25 / (5/8)</gadget>
<output>40</output>

<result>40</result>