The area of a rectangular vegetable field is 4 hectares, its length is 250 meters, and its width is in meters.
一块长方形菜地的面积是4公顷，它的长是250米，宽是多少米．
<gadget id="calculator">4 * 10_000</gadget>
<output>40_000</output>

<gadget id="calculator">40_000 / 250</gadget>
<output>160</output>

<result>160</result>