A middle school has a rectangular lawn with a width of 8 meters that needs to be enlarged. The original area was 480 square meters, but now the width has to be increased to 24 meters, and the length remains the same. How many square meters is the enlarged lawn area?
某中学有一个宽8米的长方形草坪要扩大面积，原来的面积为480平方米，现在宽要增加到24米，长度不变，扩大后的草坪面积是多少平方米？
<gadget id="calculator">24 / 8</gadget>
<output>3</output>

<gadget id="calculator">3 * 480</gadget>
<output>1_440</output>

<result>1_440</result>