Xiaoxiao's father made a 23-meter-long fence around a rectangular vegetable field with a wall, forming a rectangle with a width of 6 meters. What is the area of this vegetable field?
笑笑的爸爸编了一段23米长的篱笆，围在一面有墙的长方形菜地上，围成一个长方形宽6米．这块菜地的面积是多？
<gadget id="calculator">6 * 2</gadget>
<output>12</output>

<gadget id="calculator">23 - 12</gadget>
<output>11</output>

<gadget id="calculator">11 * 6</gadget>
<output>66</output>

<result>66</result>