A newly built expressway is 200 kilometers long and 40 meters wide. So how many hectares does this road cover?
一条新建的高速公路，长200千米，宽40米．那么这条公路占地多少公顷？
<gadget id="calculator">40 / 10_000</gadget>
<output>1/250 = around 0.004</output>

<gadget id="calculator">200 * 1_000 * (1/250)</gadget>
<output>800</output>

<result>800</result>