A class has 25 boys and 20 girls. What percentage is the number of girls compared to the number of boys?
某班有男生25人，女生20人．女生人数是男生人数的几分之几？
<gadget id="calculator">20 / 25</gadget>
<output>4/5 = around 0.8</output>

<result>4/5 = around 0.8</result>