The school needs to paint the wall on the left side of the classroom. The wall is 9 meters long and 4 meters wide. There are 2 windows on the wall, and each window is 2 square meters. Now this wall needs to be painted. How many square meters is the area to be painted?
学校要粉刷教室左边的墙壁，墙壁长9米，宽4米，墙上有2扇窗户，每扇窗户2平方米，现在要粉刷这面墙壁，要粉刷的面积是多少平方米？
<gadget id="calculator">9 * 4</gadget>
<output>36</output>

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

<gadget id="calculator">36 - 4</gadget>
<output>32</output>

<result>32</result>