The area of a parallelogram is 4.5 square meters, the height of the base is 1.5 meters, and the length of the base is how many meters.
一个平行四边形的面积是4.5平方米，底边上的高是1.5米，底长是多少米．
<gadget id="calculator">4.5 / 1.5</gadget>
<output>3</output>

<result>3</result>