The area of a parallelogram is 4.5 square centimeters, and the two adjacent sides are respectively enlarged to twice the original size, find the current area.
一个平行四边形面积是4.5平方厘米，相邻的两条边分别扩大到原来的2倍，求现在的面积．
<gadget id="calculator">4.5 * 2 * 2</gadget>
<output>18</output>

<result>18</result>