A rectangular swimming pool covers an area of 600 square meters. It is known that the length of the swimming pool is 30 meters. Find the width of the swimming pool. (solution by equation)
一个长方形游泳池占地600平方米，已知该游泳池的长是30米，求游泳池的宽．(用方程解)
<gadget id="calculator">600 / 30</gadget>
<output>20</output>

<result>20</result>