The width of the rectangular flower bed is 8 meters, the known area of the flower bed is 168 square meters, how many meters is the length of the flower bed? (solution by equation)
长方形花坛的宽是8米，已知花坛的面积是168平方米，花坛的长是多少米？(用方程解)
<gadget id="calculator">168 / 8</gadget>
<output>21</output>

<result>21</result>