For a trapezoidal orchard, the upper base is 56 meters, the lower base is 44 meters, and the height is 40 meters. One apple tree can be planted every 4 square meters. How many apple trees can be planted in this field?
一个梯形果园，上底是56米，下底是44米，高是40米，如果每4平方米可以种一棵苹果树．这块地一共可以种多少棵苹果树？
<gadget id="calculator">56 + 44</gadget>
<output>100</output>

<gadget id="calculator">40 / 2 / 4</gadget>
<output>5</output>

<gadget id="calculator">100 * 5</gadget>
<output>500</output>

<result>500</result>