In an event, there are more boys than girls (1/5), 30 girls, how many boys.
一次活动中，男生比女生多(1/5)，女生30人，男生多少人．
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 + (1/5)</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">30 * (6/5)</gadget>
<output>36</output>

<result>36</result>