The area of a parallelogram is 7.5 square decimeters, how many decimeters is the base, and its height is 2.5 decimeters.
一个平行四边形的面积是7.5平方分米，底是多少分米，它的高才是2.5分米．
<gadget id="calculator">7.5 / 2.5</gadget>
<output>3</output>

<result>3</result>