There are 32 boys and 30 girls in Class 1 of the fourth grade. How many girls account for the whole class?
四年级一班有男生32人，女生30人，女生的人数占全班人数的多少．
<gadget id="calculator">32 + 30</gadget>
<output>62</output>

<gadget id="calculator">30 / 62</gadget>
<output>15/31 = around 0.483871</output>

<result>15/31 = around 0.483871</result>