There are 6 fewer boys than girls, and more girls than boys (1/3), how many boys are there?
男生比女生少6人，女生比男生多(1/3)，男生有多少人．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">6 / (1/3)</gadget>
<output>18</output>

<result>18</result>