The ratio of boys to girls is 3:2, how many boys account for the whole class
男生与女生人数的比是3：2，男生占全班人数的多少
<gadget id="calculator">3 + 2</gadget>
<output>5</output>

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

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