A classroom is 8m in length, 6m in width, and 3m in height. Now the four walls of the classroom need to be painted. It is known that the total area of doors, windows and blackboards is 9m**2. If you need to spend 5 yuan for paint per square meter, paint this classroom How much does it cost?
一个教室，长是8m，宽是6m，高3m，现要粉刷教室的四壁，已知门窗和黑板的面积共是9m**2，如果每平方米需要花5元涂料费，粉刷这个教室需要花费多少元？
<gadget id="calculator">6 * 3 * 2</gadget>
<output>36</output>

<gadget id="calculator">8 * 3 * 2</gadget>
<output>48</output>

<gadget id="calculator">48 - 9</gadget>
<output>39</output>

<gadget id="calculator">36 + 39</gadget>
<output>75</output>

<gadget id="calculator">75 * 5</gadget>
<output>375</output>

<result>375</result>