A transmission line can supply power through 3 air conditioners at most at the same time. A company has installed an air conditioner in each of the 4 rooms (sharing a transmission line). Think about it, in 24 hours a day, how many hours can the air conditioner be used in each room on average.
一条输电线路最多能同时经3台空调供电，某公司在4个房间(共用一条输电线路)里各安装了一台空调．想一想，在每天24小时里，平均每个房间可以使用空调最多多少小时．
<gadget id="calculator">24 / 4</gadget>
<output>6</output>

<gadget id="calculator">24 - 6</gadget>
<output>18</output>

<result>18</result>