An apple orchard is 24 meters long and 18 meters wide. If each apple tree covers an area of 3 square meters, how many apple trees are there in this apple orchard?
一个苹果园长24米，宽18米，如果每棵苹果树占地3平方米，这个苹果园一共有多少棵苹果树？
<gadget id="calculator">18 / 3</gadget>
<output>6</output>

<gadget id="calculator">24 * 6</gadget>
<output>144</output>

<result>144</result>