There are 9 girls in the third class of the fifth grade, and there are 22 more boys than girls. What percentage of the number of girls is the number of boys?
五年级三班有女生9人，男生比女生多22人，女生人数是男生人数的几分之几？
<gadget id="calculator">9 + 22</gadget>
<output>31</output>

<gadget id="calculator">9 / 31</gadget>
<output>9/31 = around 0.290323</output>

<result>9/31 = around 0.290323</result>