There is a parallelogram wheat field with a base of 600 meters and a height of 400 meters. What is its area in hectares?
有一块平行四边形麦田，底600米，高400米，它的面积是多少公顷．
<gadget id="calculator">600 * 400</gadget>
<output>240_000</output>

<gadget id="calculator">240_000 / 10_000</gadget>
<output>24</output>

<result>24</result>