A rectangular orchard is 250 meters long and 80 meters wide. If 2 saplings are planted per square meter, how many saplings can be planted in this orchard?
一个长方形果园，长250米，宽80米．如果每平方米种2棵树苗，这个果园一共可以种多少棵树苗？
<gadget id="calculator">250 * 80</gadget>
<output>20_000</output>

<gadget id="calculator">2 * 20_000</gadget>
<output>40_000</output>

<result>40_000</result>