There are 20 female students and 25 male students in a certain class, how much more male students than female students.
某班有20个女同学，25个男同学，男同学比女同学多多少．
<gadget id="calculator">25 - 20</gadget>
<output>5</output>

<gadget id="calculator">5 / 20</gadget>
<output>1/4 = around 0.25</output>

<result>1/4 = around 0.25</result>