The area of a parallelogram is 10.2 square meters, if its base and height are enlarged by 3 times, then its area is how many square meters.
一个平行四边形的面积是10.2平方米，若它的底和高都扩大3倍，则它的面积就是多少平方米．
<gadget id="calculator">3 * 3</gadget>
<output>9</output>

<gadget id="calculator">10.2 * 9</gadget>
<output>91.8</output>

<result>91.8</result>