The school needs to paint the walls and ceiling of a classroom. It is known that the classroom is 8 meters long, 6 meters wide, and 3 meters high. The total area of doors, windows, and blackboards is 13.6 meters**2. How much does it cost to paint this classroom?
学校要粉刷一间教室的四壁和顶棚，已知教室长8米，宽6米，高3米，门、窗、黑板总面积是13.6米**2，如果每米**2需要花6元涂料费，粉刷这间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 - 13.6</gadget>
<output>70.4</output>

<gadget id="calculator">48 + 70.4</gadget>
<output>118.4</output>

<gadget id="calculator">118.4 * 6</gadget>
<output>710.4</output>

<result>710.4</result>