It started to rain at 9:00 in the morning and lasted for 5 hours, when it stopped in the afternoon.
上午9点开始下雨，下了5个小时，下午多少时雨停．
<gadget id="calculator">9 + 5</gadget>
<output>14</output>

<gadget id="calculator">14 - 12</gadget>
<output>2</output>

<result>2</result>