The school enrolls students in the dance interest group, and has enrolled 8 girls and 12 boys. How many more girls will be recruited so that girls account for the total number of dance groups (3/5).
学校招收舞蹈兴趣小组的学生，已录取女生8人，男生12人，还要招收多少名女生才能使女生占舞蹈组总人数的(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">12 + 8</gadget>
<output>20</output>

<gadget id="calculator">30 - 20</gadget>
<output>10</output>

<result>10</result>