The area of the parallelogram is 360 cm**2, and the height is 18 cm. What is the base of the parallelogram in cm?
平行四边形的面积是360厘米**2，高是18厘米，这个平行四边形的底是多少厘米？
<gadget id="calculator">360 / 18</gadget>
<output>20</output>

<result>20</result>