There are 23 boys and 27 girls in Class 2 of the sixth year. How many girls account for the whole class?
六年2班男生有23人，女生有27人，女生占全班人数的多少．
<gadget id="calculator">23 + 27</gadget>
<output>50</output>

<gadget id="calculator">27 / 50</gadget>
<output>27/50 = around 0.54</output>

<result>27/50 = around 0.54</result>