A rectangular park covers an area of 6 hectares, its width is 50 meters, and its length is how many meters.
一块长方形的公园占地为6公顷，它的宽为50米，长是多少米．
<gadget id="calculator">6 * 10_000</gadget>
<output>60_000</output>

<gadget id="calculator">60_000 / 50</gadget>
<output>1_200</output>

<result>1_200</result>