A total of 24 people participated in the dance, and the number of boys is twice the number of girls. Boys account for the total number ((())/(())). How many girls are there?
参加跳舞活动的共有24人，其中男生人数是女生人数的2倍，男生占总人数的((())/(()))，女生有多少人．
<gadget id="calculator">2 + 1</gadget>
<output>3</output>

<gadget id="calculator">24 / 3</gadget>
<output>8</output>

<result>8</result>