Uncle Li’s fish pond has an area of 408 square meters and a width of 12 meters. Now the length will be tripled and the width will remain the same. What is the area of the fish pond after the expansion?
李叔叔家的鱼塘面积是408平方米，宽是12米，现要把长扩大到原来的3倍，宽不变，扩建后的鱼塘面积是多少？
<gadget id="calculator">408 * 3</gadget>
<output>1_224</output>

<result>1_224</result>