The shape of an apple orchard is trapezoid, its upper base is 145 meters, its lower base is 95 meters, and its height is 75 meters. If each fruit tree covers an area of 15 square meters, how many fruit trees can be planted in this orchard?
一个苹果园的形状是梯形，它的上底是145米，下底是95米，高是75米．如果每棵果树占地15平方米，这个果园能种上多少棵果树？
<gadget id="calculator">145 + 95</gadget>
<output>240</output>

<gadget id="calculator">75 / 2 / 15</gadget>
<output>5/2 = around 2.5</output>

<gadget id="calculator">240 * (5/2)</gadget>
<output>600</output>

<result>600</result>