A rectangular park with an area of about 1 hectare, 40 meters long and how many meters wide is it?
一长方形公园，面积约1公顷，长40米，宽是多少米．
<gadget id="calculator">10_000 / 40</gadget>
<output>250</output>

<gadget id="calculator">1 * 250</gadget>
<output>250</output>

<result>250</result>