The multimedia classroom of Shaw Hope Primary School is 24 meters long, 10 meters wide, and 3 meters high. Now it is decided to repaint the ceiling and surrounding walls during the summer vacation. It is known that the area of doors and windows occupies 120 square meters. If the first pass requires 0.5 liters of paint per square meter, the second pass will save (1/5) compared to the first pass, and there will still be a 10% loss rate in the actual painting. Could you please help to calculate how many liters of paint need to be purchased?
逸夫希望小学多媒体教室的长是24米，宽10米，高3米，现决定趁暑假给天花板和四周的墙壁重新粉刷，已知门窗的面积占120平方米．若第一遍每平方米需用涂料0.5升，第二遍粉刷时比第一遍节约(1/5)，实际粉刷时还有10%的损耗率．请你帮助计算一下，共需购买涂料多少升？
<gadget id="calculator">24 * 10</gadget>
<output>240</output>

<gadget id="calculator">24 * 3 * 2</gadget>
<output>144</output>

<gadget id="calculator">10 * 3 * 2</gadget>
<output>60</output>

<gadget id="calculator">60 - 120</gadget>
<output>-60</output>

<gadget id="calculator">240 + 144 + (-60)</gadget>
<output>324</output>

<gadget id="calculator">324 * 0.5</gadget>
<output>162</output>

<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 - (1/5)</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">324 * 0.5 * (4/5)</gadget>
<output>129.6</output>

<gadget id="calculator">162 + 129.6</gadget>
<output>291.6</output>

<gadget id="calculator">10 / 100</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">1 + (1/10)</gadget>
<output>11/10 = around 1.1</output>

<gadget id="calculator">291.6 * (11/10)</gadget>
<output>320.76</output>

<result>320.76</result>