There are 30 boys in the fifth grade, 5 more boys than girls, and the number of girls is the number of the whole class.
五年级有男生30人，男生比女生多5人，女生人数是全班人数的多少．
<gadget id="calculator">30 - 5</gadget>
<output>25</output>

<gadget id="calculator">30 + 25</gadget>
<output>55</output>

<gadget id="calculator">25 / 55</gadget>
<output>5/11 = around 0.454545</output>

<result>5/11 = around 0.454545</result>