There is a trapezoidal orchard, the upper base is 110 meters, the lower base is 160 meters, and the height is 80 meters. If each fruit tree occupies an area of 9 square meters, how many fruit trees are there in this orchard?
有一块梯形的果园，它的上底是110米，下底是160米，高80米，如果每棵果树占地9平方米，这个果园共有果树多少棵？
<gadget id="calculator">110 + 160</gadget>
<output>270</output>

<gadget id="calculator">80 / 2 / 9</gadget>
<output>40/9 = around 4.444444</output>

<gadget id="calculator">270 * (40/9)</gadget>
<output>1_200</output>

<result>1_200</result>