A rope is 40 meters long. After cutting a section, there is (3/4) left. How many meters have been cut?
一根绳子长40米，剪去一段后，还剩(3/4)，剪去了多少米？
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">40 * (3/4)</gadget>
<output>30</output>

<gadget id="calculator">40 - 30</gadget>
<output>10</output>

<result>10</result>