The ratio of the number of boys to the number of girls is 3:2, how much more boys than girls
男生人数与女生人数的比是3：2，男生人数比女生多多少
<gadget id="calculator">3 - 2</gadget>
<output>1</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<result>1/2 = around 0.5</result>