The area of a parallelogram is 560 square centimeters, the height is 7 centimeters, and the base is in centimeters.
一个平行四边形的面积是560平方厘米，高是7厘米，底是多少厘米．
<gadget id="calculator">560 / 7</gadget>
<output>80</output>

<result>80</result>