A canal is 5 kilometers long and 2 meters wide. What is the area of the canal in hectares?
一条水渠长5千米，宽2米，这条水渠的占地面积是多少公顷．
<gadget id="calculator">2 / 10_000</gadget>
<output>1/5_000 = around 0.0002</output>

<gadget id="calculator">5 * 1_000 * (1/5_000)</gadget>
<output>1</output>

<result>1</result>