A road is 15 kilometers long and 40 meters wide. How many hectares does this road cover?
一条路长15千米，宽40米，这条路的占地面积是多少公顷？
<gadget id="calculator">40 / 10_000</gadget>
<output>1/250 = around 0.004</output>

<gadget id="calculator">15 * 1_000 * (1/250)</gadget>
<output>60</output>

<result>60</result>