The number of boys in class 6 and 4 is the number of girls (3/5), and the number of girls accounts for the number of people in the class.
六4班男生人数是女生人数的(3/5)，女生人数占全班人数的多少．
<gadget id="calculator">3 + 5</gadget>
<output>8</output>

<gadget id="calculator">5 / 8</gadget>
<output>5/8 = around 0.625</output>

<result>5/8 = around 0.625</result>