In a tourist area, there are 360 tourists in the morning and 240 tourists in the afternoon. If every 30 tourists need a cleaner, how many more cleaners should be sent in the morning than in the afternoon?
一个旅游区，上午有游客360人，下午有游客240人，如果每30位游客需要一名保洁员，上午比下午要多派几名保洁员？
<gadget id="calculator">360 / 30</gadget>
<output>12</output>

<gadget id="calculator">240 / 30</gadget>
<output>8</output>

<gadget id="calculator">12 - 8</gadget>
<output>4</output>

<result>4</result>