The number of boys in a class is 3/4 of the number of girls, and the number of boys is the number of the whole class
某班男生人数是女生人数的(3/4)，男生人数是全班人数的多少
<gadget id="calculator">3 / 7</gadget>
<output>3/7 = around 0.428571</output>

<result>3/7 = around 0.428571</result>