The number of boys in the sixth grade is more than the number of girls (1/5), and the number of boys accounts for the number of the whole class.
六年级男生人数比女生人数多(1/5)，男生人数占全班人数的多少．
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 + (1/5)</gadget>
<output>6/5 = around 1.2</output>

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

<gadget id="calculator">(6/5) / (11/5)</gadget>
<output>6/11 = around 0.545455</output>

<result>6/11 = around 0.545455</result>