If the number of girls in a class is 2/3 of the number of boys, what is the number of boys in the class
如果某班级女生人数是男生人数的(2/3)，那么男生人数是全班人数的多少
<gadget id="calculator">2 + 3</gadget>
<output>5</output>

<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<result>3/5 = around 0.6</result>