The ratio of the number of boys to the number of girls in the sixth grade is 4:3, there are 27 girls, how many boys are there?
六年级男生人数与女生人数的比是4：3，女生有27人，男生有多少人？
<gadget id="calculator">27 / 3</gadget>
<output>9</output>

<gadget id="calculator">9 * 4</gadget>
<output>36</output>

<result>36</result>