To paint the walls and ceilings of 3 classrooms of the same size. Each classroom is 9 meters long, 6 meters wide, and 4 meters high, with a door and window area of 22 square meters. How many square meters is the total area to be painted?
要粉刷3间同样大小的教室的四壁和顶部．每个教室长9米，宽6米，高4米，门窗面积22平方米．共要粉刷的面积是多少平方米？
<gadget id="calculator">9 * 6</gadget>
<output>54</output>

<gadget id="calculator">9 * 4</gadget>
<output>36</output>

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

<gadget id="calculator">36 + 24</gadget>
<output>60</output>

<gadget id="calculator">60 * 2</gadget>
<output>120</output>

<gadget id="calculator">120 - 22</gadget>
<output>98</output>

<gadget id="calculator">54 + 98</gadget>
<output>152</output>

<gadget id="calculator">152 * 3</gadget>
<output>456</output>

<result>456</result>