There are 24 boys in Class 1, and the ratio of boys to girls is 4:5. How many more girls than boys?
六1班男生有24人，男、女生人数之比是4：5，女生比男生多多少人？
<gadget id="calculator">5 / 4</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">24 * (5/4)</gadget>
<output>30</output>

<gadget id="calculator">30 - 24</gadget>
<output>6</output>

<result>6</result>