If the length of a rectangular site is increased by 5 meters, the area will be increased by 40 square meters, and if the width is increased by 5 meters, the area will be increased by 60 square meters. What is the original area of the site in square meters?
一块长方形场地，如果长增加5米，面积就增加40平方米，如果宽增加5米，面积就增加60平方米，这块场地原来的面积是多少平方米？
<gadget id="calculator">60 / 5</gadget>
<output>12</output>

<gadget id="calculator">40 / 5</gadget>
<output>8</output>

<gadget id="calculator">12 * 8</gadget>
<output>96</output>

<result>96</result>