Uncle Zhang’s family has a rectangular orchard, 25 meters long and 16 meters wide. Uncle Zhang plans to plant orange trees, one per 4 square meters. How many orange trees can be planted in this orchard?
张大爷家有一个长方形果园，长25米，宽16米．张大爷打算种橘树，每4平方米种一棵．这个果园一共可种多少棵橘树？
<gadget id="calculator">16 / 4</gadget>
<output>4</output>

<gadget id="calculator">25 * 4</gadget>
<output>100</output>

<result>100</result>