The newly built runway of an airport is 2500 meters long and 80 meters wide. How many hectares does it cover?
某飞机场新建的跑道，长2500米，宽80米，占地多少公顷？
<gadget id="calculator">2_500 * 80</gadget>
<output>200_000</output>

<gadget id="calculator">200_000 / 10_000</gadget>
<output>20</output>

<result>20</result>