There are more boys than girls in the sixth grade (1/5), and how many girls account for the whole grade
六年级学生中男生比女生多(1/5)，女生占全年级人数的多少
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 + (1/5) + 1</gadget>
<output>11/5 = around 2.2</output>

<gadget id="calculator">1 / (11/5)</gadget>
<output>5/11 = around 0.454545</output>

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