On Saturday night, Xiao Hua went to bed at 10:00 and woke up at 8:00 the next morning. How many hours did she sleep?
星期六晚上，小华10时睡觉，第二天早上8时起床，她睡了多少小时．
<gadget id="calculator">2 + 8</gadget>
<output>10</output>

<result>10</result>