The ratio of the number of males to females in the fifth grade of a certain school is 5:4. There are 10 more males than females. How many females are there?
某校五年级男、女生人数的比是5：4，男生比女生多10人，女生有多少人？
<gadget id="calculator">5 - 4</gadget>
<output>1</output>

<gadget id="calculator">10 / 1</gadget>
<output>10</output>

<gadget id="calculator">10 * 4</gadget>
<output>40</output>

<result>40</result>