A total of 108 tulips are planted in the three large flower beds of the school. There are two kinds of tulips, red and yellow, in each flower bed, and there are as many trees of each kind. How many yellow tulips are there on average in each flower bed?
学校3个大花坛一共栽了108棵郁金香，每个花坛里有红、黄两种郁金香，每种棵树同样多．平均每个花坛里黄色郁金香有多少棵？
<gadget id="calculator">108 / 3 / 2</gadget>
<output>18</output>

<result>18</result>