There are 25 girls in class three (two), 2 less than boys, and boys account for ((())/(())) of the whole class.
三(二)班有25名女生，比男生少2人，男生占全班人数的((())/(()))．
<gadget id="calculator">25 + 2</gadget>
<output>27</output>

<gadget id="calculator">25 + 27</gadget>
<output>52</output>

<gadget id="calculator">27 / 52</gadget>
<output>27/52 = around 0.519231</output>

<result>27/52 = around 0.519231</result>