A classroom is 13m long, 8m wide, and 3m high. To paint the ceiling and four walls of the classroom, the area excluding doors, windows and blackboards is 29.6m**2, and the average paint is 0.3kg per square meter. How many kilograms of paint are needed in total?
一间教室长13m，宽8m，高3m．要粉刷教室的天花板和四面墙壁，除去门窗和黑板的面积29.6m**2，平均每平方米用涂料0.3千克，一共需要涂料多少千克？
<gadget id="calculator">13 * 8</gadget>
<output>104</output>

<gadget id="calculator">13 * 3</gadget>
<output>39</output>

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

<gadget id="calculator">39 + 24</gadget>
<output>63</output>

<gadget id="calculator">63 * 2</gadget>
<output>126</output>

<gadget id="calculator">126 - 29.6</gadget>
<output>96.4</output>

<gadget id="calculator">104 + 96.4</gadget>
<output>200.4</output>

<gadget id="calculator">200.4 * 0.3</gadget>
<output>60.12</output>

<result>60.12</result>