The shape of an orchard is trapezoidal, its upper base is 170 meters, the lower base is 180 meters, and its height is 60 meters. If each fruit tree covers an area of 10 square meters, how many fruit trees are there in this orchard?
一个果园的形状是梯形，它的上底是170米，下底是180米，高60米．如果每棵果树占地10平方米，这个果园一共有多少棵果树？
<gadget id="calculator">170 + 180</gadget>
<output>350</output>

<gadget id="calculator">60 / 2 / 10</gadget>
<output>3</output>

<gadget id="calculator">350 * 3</gadget>
<output>1_050</output>

<result>1_050</result>