In a school, the number of girls is equivalent to (4/5) the number of boys, there are 280 boys, how many girls are there?
一个学校，女生人数相当于男生人数的(4/5)，有男生280人，有女生多少人？
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">280 * (4/5)</gadget>
<output>224</output>

<result>224</result>