Expressed in the simplest fraction: 18 minutes is a fraction of an hour: how much.
用最简分数表示：18分钟是1小时的几分之几：多少．
<gadget id="calculator">18 / 60</gadget>
<output>3/10 = around 0.3</output>

<result>3/10 = around 0.3</result>