A train from Beijing to a certain place leaves at 10:00 am today and arrives at 6:00 pm that day. How much time has passed on the way?
北京开往某地的火车，今天上午10时开出，当天下午6：00到达，路上经过了多少时间？
<gadget id="calculator">18 - 10</gadget>
<output>8</output>

<result>8</result>