The area of a parallelogram is 8 square decimeters, if its base and height are respectively enlarged to 3 times of the original, how many square decimeters will its area become?
一个平行四边形的面积是8平方分米，如果它的底和高分别扩大到原来的3倍，它的面积就变成多少平方分米．
<gadget id="calculator">3 ** 2</gadget>
<output>9</output>

<gadget id="calculator">8 * 9</gadget>
<output>72</output>

<result>72</result>