There are 12 fewer boys in the chorus interest group than girls (2/3), 8 boys, how many girls?
合唱兴趣小组男生比女生的(2/3)少12人，男生有8人，女生有多少人？
<gadget id="calculator">8 + 12</gadget>
<output>20</output>

<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">20 / (2/3)</gadget>
<output>30</output>

<result>30</result>