The ratio of males to females is 4:5, and the number of females is equal to the number of males.
男、女生的人数比为4：5，女生人数是男生人数的多少．
<gadget id="calculator">5 / 4</gadget>
<output>5/4 = around 1.25</output>

<result>5/4 = around 1.25</result>