The "9-to-5" work system refers to going to work at 9 am and leaving get off work at 5 pm every day. According to this calculation, how many hours have passed from going to work in the morning to leaving get off work in the afternoon.
"朝九晚五"工作制，是指每天上午9时上班，下午5时下班．照这样计算，每天从上午上班到下午下班经过多少小时．
<gadget id="calculator">17 - 9</gadget>
<output>8</output>

<result>8</result>