What is the area of a rectangular square 200 meters long and 100 meters wide?
长200米，宽100米的长方形广场占地面积是多少公顷
<gadget id="calculator">200 * 100</gadget>
<output>20_000</output>

<gadget id="calculator">20_000 / 10_000</gadget>
<output>2</output>

<result>2</result>