There is a rectangular lawn in the Civic Square. If the length of this lawn is increased by 5 meters, then its area will increase by 30 square meters; if the width of this lawn is increased by 3 meters, then its area will increase by 48 square meters. What was the original area of the rectangular lawn in square meters?
市民广场有一块长方形草坪，如果将这块草坪的长增加5米，那么它的面积增加30平方米；如果将这块草坪的宽增加3米，那么它的面积增加48平方米．这个长方形草坪原来的面积是多少平方米？
<gadget id="calculator">48 / 3</gadget>
<output>16</output>

<gadget id="calculator">30 / 5</gadget>
<output>6</output>

<gadget id="calculator">16 * 6</gadget>
<output>96</output>

<result>96</result>