A vegetable field is 300 meters long and 200 meters wide, what is its area in hectares?
一块菜地长300米，宽200米，它的面积是多少公顷．
<gadget id="calculator">300 * 200</gadget>
<output>60_000</output>

<gadget id="calculator">60_000 / 10_000</gadget>
<output>6</output>

<result>6</result>