Uncle Wang has a rectangular vegetable field. The vegetable field covers an area of 300 meters**2 and is 15 meters wide. How long is the vegetable field?
王大爷有一块长方形的菜地，菜地占地300米**2，宽15米，菜地长多少米？
<gadget id="calculator">300 / 15</gadget>
<output>20</output>

<result>20</result>