There are 20 boys and 30 girls in Class 6 and 2. 10 of the boys are selected to participate in the rope skipping competition, and some of the girls are selected to participate in the shuttlecock kicking competition. The ratio of the remaining males and females is equal to the original number. How many girls are selected to participate? Shuttlecock game?
六2班有男生20人，女生30人，男生中抽出10人参加跳绳比赛，女生中抽出一部分人参加踢毽子比赛后，余下的男、女人数的比和原来相等，抽出了多少名女生参加踢毽子比赛？
<gadget id="calculator">20 / 30</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">(2/3) * 30</gadget>
<output>20</output>

<gadget id="calculator">20 - 20</gadget>
<output>0</output>

<gadget id="calculator">10 + 0</gadget>
<output>10</output>

<gadget id="calculator">10 / (2/3)</gadget>
<output>15</output>

<result>15</result>