There are 25 boys in class 6 and 2, and the number of girls is 4/5 of the number of boys. How many girls are there?
六2班有男生25人，女生人数是男生人数的(4/5)，女生有多少人？
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">25 * (4/5)</gadget>
<output>20</output>

<result>20</result>