In a trapezoidal orchard, the upper base is 64 meters long, 16 meters shorter than the lower base, and 50 meters high. On average, one tree is planted per 12 square meters. How many trees can be planted in total?
一块梯形果园，上底长64米，比下底短16米，高50米，平均每12平方米种1棵树，共可以种多少棵树？
<gadget id="calculator">64 + 16 + 64</gadget>
<output>144</output>

<gadget id="calculator">50 / 2 / 12</gadget>
<output>25/12 = around 2.083333</output>

<gadget id="calculator">144 * (25/12)</gadget>
<output>300</output>

<result>300</result>