The shape of a farm is approximately parallelogram. It is known that its base is 920 meters and its height is 500 meters. What is the area of this farm in hectares?
一个农场的形状近似于平行四边形．已知它的底是920米，高是500米，这个农场的面积是多少公顷？
<gadget id="calculator">920 * 500</gadget>
<output>460_000</output>

<gadget id="calculator">460_000 / 10_000</gadget>
<output>46</output>

<result>46</result>