A square with a side length of 10, a line segment AB with a length of 9, the endpoints are on the two adjacent sides of the square, draw a horizontal line at 3 places below A, and draw a vertical line at 2 places to the left of B, get CD, find the quadrilateral ABCD area.
一个正方形边长为10，一条长为9的线段AB，端点在这个正方形的两条邻边上，在A下面3处作水平线，在B左边2处作垂直线，得到CD，求四边形ABCD的面积．
<gadget id="calculator">10 * 10</gadget>
<output>100</output>

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

<gadget id="calculator">100 - 6</gadget>
<output>94</output>

<gadget id="calculator">94 / 2</gadget>
<output>47</output>

<gadget id="calculator">47 + 6</gadget>
<output>53</output>

<result>53</result>