A rectangular dining table with a circumference of 34 decimeters and a width 5 decimeters less than its length should be matched with glass of the same size. What is the area of this piece of glass?
一个长方形餐桌，周长34分米，宽比长少5分米，要配上同样大小的玻璃，这块玻璃的面积是多少平方分米？
<gadget id="calculator">2 * 5</gadget>
<output>10</output>

<gadget id="calculator">34 - 10</gadget>
<output>24</output>

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

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

<gadget id="calculator">6 + 5</gadget>
<output>11</output>

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

<result>66</result>