If the length of a rectangle is increased by 2cm, the area will increase by 8cm**2, and if the width is increased by 2cm, the area will increase by 12cm**2. What is the area of the rectangle in square centimeters?
长方形，如果长增加2cm，面积就增加8cm**2，如果宽增加2cm，面积就增加12cm**2，原来这个长方形的面积是多少平方厘米？
<gadget id="calculator">12 / 2</gadget>
<output>6</output>

<gadget id="calculator">8 / 2</gadget>
<output>4</output>

<gadget id="calculator">6 * 4</gadget>
<output>24</output>

<result>24</result>