There are 10 girls in the interest group and 12 boys. How many girls should be recruited so that girls account for the total number of dancers (3/5).
兴趣小组有女生10人，男生12人，还要录取女生多少人才能使女生占舞蹈队总人数的(3/5)．
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">1 - (3/5)</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">12 / (2/5)</gadget>
<output>30</output>

<gadget id="calculator">30 * (3/5)</gadget>
<output>18</output>

<gadget id="calculator">18 - 10</gadget>
<output>8</output>

<result>8</result>