The school sports team has 30 students, and the ratio of boys to girls is 3:2. So how many girls are there?
学校体育队有30名学生，其中男生与女生人数的比是3：2．那么女生是多少人．
<gadget id="calculator">3 + 2</gadget>
<output>5</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

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

<result>12</result>