There are 4 boys on the playground, exactly (1/3) the number of girls, how many girls are there on the playground.
操场上有4名男生，正好有女生人数的(1/3)，操场上有多少名女生．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">4 / (1/3)</gadget>
<output>12</output>

<result>12</result>