Dad goes to work at 8:00 am every day, leaves work at 17:00 pm, and takes an hour break at noon. How many hours does he have to work a day?
爸爸每天上午8：00上班，下午17：00下班，中午休息1小时，他一天要工作多少小时
<gadget id="calculator">17 - 8 - 1</gadget>
<output>8</output>

<result>8</result>