There is a vegetable field covering an area of one hectare that can harvest 2,000 kilograms of vegetables. If its side length is extended by 100 meters and the harvest is normal without accidents, how many tons can the vegetable field increase?
有一块占地面积一公顷的菜地能收2000千克的菜，如果它的边长各延长100米，不出意外正常收获，那么这块菜地能增产多少吨？
<gadget id="calculator">2_000 * 2 * 2</gadget>
<output>8_000</output>

<gadget id="calculator">8_000 - 2_000</gadget>
<output>6_000</output>

<gadget id="calculator">6_000 / 1_000</gadget>
<output>6</output>

<result>6</result>