The black and white team lit 24 candles in a dark mountain temple. Suddenly a gust of wind blew out 5 candles; after a while, 4 more were blew out; at this time, Ozebra closed all the windows, and then no candles were blown out again. So, how many candles are left in the mountain temple?
黑白团队在一个黑漆漆的山庙里点上了24支蜡烛．突然一阵风吹灭了5支蜡烛；过了一会，又被吹灭了4支；这时奥斑马把窗子都关上，之后就再也没有蜡烛被吹灭．那么，山庙里最后还剩下多少支蜡烛．
<gadget id="calculator">5 + 4</gadget>
<output>9</output>

<result>9</result>