A cuboid classroom is 8 meters long, 7 meters wide, and 4 meters high. The area of doors, windows and blackboards is 24 square meters. Now paint the top and four walls of the classroom, if 0.6 kg of paint is needed per square meter, how many kg of paint is needed in total?
一个长方体教室，长8米，宽7米，高4米，门窗和黑板的面积共24平方米．现粉刷教室的顶部和四面墙壁，如果每平方米需要涂料0.6千克，共需涂料多少千克？
<gadget id="calculator">8 * 7</gadget>
<output>56</output>

<gadget id="calculator">8 * 4</gadget>
<output>32</output>

<gadget id="calculator">7 * 4</gadget>
<output>28</output>

<gadget id="calculator">32 + 28</gadget>
<output>60</output>

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

<gadget id="calculator">120 - 24</gadget>
<output>96</output>

<gadget id="calculator">56 + 96</gadget>
<output>152</output>

<gadget id="calculator">152 * 0.6</gadget>
<output>91.2</output>

<result>91.2</result>