A rectangle has a length to width ratio of 3:2. If the length and width are increased by 4 cm respectively, the area should be increased by 56 cm**2. What is the area of the original rectangle in square centimeters?
一个长方形，长与宽的比是3：2．长、宽分别增加4厘米，面积应增加56厘米**2，原来长方形的面积是多少平方厘米？
<gadget id="calculator">4 * 4</gadget>
<output>16</output>

<gadget id="calculator">56 - 16</gadget>
<output>40</output>

<gadget id="calculator">3 * 2</gadget>
<output>6</output>

<gadget id="calculator">3 * 4</gadget>
<output>12</output>

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

<gadget id="calculator">8 - 6</gadget>
<output>2</output>

<gadget id="calculator">6 + 12 + 2</gadget>
<output>20</output>

<gadget id="calculator">40 / 20</gadget>
<output>2</output>

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

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

<result>24</result>