Mother goes to work at 8 am every day, leaves work at 6 pm, and takes a 2-hour break at noon. How many hours does mother work every day?
妈妈每天上午8时上班，下午6时下班，中午休息2小时，妈妈每天工作多少小时．
<gadget id="calculator">18 - 8 - 2</gadget>
<output>8</output>

<result>8</result>