Mom goes to work at 8:00 am, takes an hour break at noon, and leaves work at 5:00 pm. How many hours does mother work in a day?
妈妈上午8时上班，中午休息1小时，下午5时下班，妈妈一天工作了多少小时．
<gadget id="calculator">17 - 8 - 1</gadget>
<output>8</output>

<result>8</result>