A laboratory is 8 meters long, 6 meters wide, and 3 meters high. To paint the ceiling and four walls of the laboratory, the area excluding doors, windows and blackboards is 11.6 square meters, and the average cost of paint is 4 yuan per square meter. How much does it cost to paint this classroom?
一个实验室长8米，宽6米，高3米．要粉刷实验室的天花板和四面墙壁，除去门窗和黑板的面积11.6平方米，平均每平方米需要花4元涂料费，粉刷这个教室需要花费多少钱？
<gadget id="calculator">8 * 6</gadget>
<output>48</output>

<gadget id="calculator">8 * 3</gadget>
<output>24</output>

<gadget id="calculator">6 * 3</gadget>
<output>18</output>

<gadget id="calculator">24 + 18</gadget>
<output>42</output>

<gadget id="calculator">42 * 2</gadget>
<output>84</output>

<gadget id="calculator">84 - 11.6</gadget>
<output>72.4</output>

<gadget id="calculator">48 + 72.4</gadget>
<output>120.4</output>

<gadget id="calculator">120.4 * 4</gadget>
<output>481.6</output>

<result>481.6</result>