A square vegetable field with an area of 1 hectare is now increased by 200 meters on each side. How many hectares has the area of this vegetable field increased?
面积是1公顷的正方形菜地，现在各边长增加200米，这块菜地的面积增加了多少公顷？
<gadget id="calculator">100 + 200</gadget>
<output>300</output>

<gadget id="calculator">300 * 300</gadget>
<output>90_000</output>

<gadget id="calculator">1 * 10_000</gadget>
<output>10_000</output>

<gadget id="calculator">90_000 - 10_000</gadget>
<output>80_000</output>

<gadget id="calculator">80_000 / 10_000</gadget>
<output>8</output>

<result>8</result>