The ratio of boys to girls is 5:4, there are 55 boys, how many girls are there?
男生与女生的人数比是5：4，男生有55人，女生有多少人？
<gadget id="calculator">55 / 5</gadget>
<output>11</output>

<gadget id="calculator">11 * 4</gadget>
<output>44</output>

<result>44</result>