The length of a rectangular vegetable garden is 48 meters, and the width is 18 meters less than the length. What is the area of the vegetable garden in square meters?
一块长方形的菜园长是48米，宽比长少18米．这块菜园的面积是多少平方米？
<gadget id="calculator">48 - 18</gadget>
<output>30</output>

<gadget id="calculator">48 * 30</gadget>
<output>1_440</output>

<result>1_440</result>