There is a sidewalk, 8 meters wide, covering an area of 780 square meters. For the convenience of pedestrians, the width needs to be increased to 24 meters, and the length remains unchanged. What is the area after widening?
有一条人行道，宽8米，占地面积780平方米．为了行人方便，需把宽增加到24米，长不变，问扩宽后的面积是多少？
<gadget id="calculator">24 / 8</gadget>
<output>3</output>

<gadget id="calculator">780 * 3</gadget>
<output>2_340</output>

<result>2_340</result>