If the base of a parallelogram is 1.8 decimeters and the height is 0.9 decimeters, what is its area?
一个平行四边形的底为1.8分米，高是0.9分米，它的面积是多少平方分米．
<gadget id="calculator">1.8 * 0.9</gadget>
<output>1.62</output>

<result>1.62</result>