There is a trapezoidal open space in front of Xiaoming’s grandmother’s house. Grandma measured it and found that the height is 2.4 meters, the bottom of one is 14 meters, and the bottom of the other is 16 meters. How big is this land? Grandma wants to plant peonies on this land. If each peony covers an area of 0.9 square meters, how many peonies can be planted?
小明外婆家门前有一块梯形的空地，外婆量了一下，高是2.4米，一条底14米，另一条底16米，这块地面积有多大呢？外婆要在这块地上栽种牡丹，如果每棵牡丹占地0.9平方米，能种多少棵呢？
<gadget id="calculator">2.4 / 2</gadget>
<output>1.2</output>

<gadget id="calculator">30 * 1.2</gadget>
<output>36</output>

<gadget id="calculator">36 / 0.9</gadget>
<output>40</output>

<result>40</result>