The area of the rectangle is 240 square meters. If the length remains the same and the width is tripled, what is the area of the new rectangle?
长方形的面积是240平方米，如果长不变，宽扩大到原来的3倍，则新的长方形的面积是多少平方米．
<gadget id="calculator">240 * 3</gadget>
<output>720</output>

<result>720</result>