A special job must be guarded day and night. If 8 people are arranged to be on duty in turn, and there are 3 people on duty, how many hours does each person work per day on average?
一项特殊的工作必须日夜有人看守，如果安排8人轮流值班，当值人员为3人，那么，平均每人每天工作多少小时．
<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">24 * (3/8)</gadget>
<output>9</output>

<result>9</result>