A class is 35 minutes, and it takes 14 minutes to do the exercises. What percentage of the time for the exercises is the whole class?
一节课35分钟，做练习用了14分钟，做练习的时间占整节课的几分之几？
<gadget id="calculator">14 / 35</gadget>
<output>2/5 = around 0.4</output>

<result>2/5 = around 0.4</result>