A small canteen is 10 meters long, 8 meters wide, and 5 meters high, and the walls and ceiling need to be painted. Deducting the area of doors and windows of 18.4 square meters, the average lime used per square meter is 0.2 kilograms, how many kilograms of lime is used in total?
一个小食堂长10米，宽8米，高5米，要粉刷四壁和顶棚．扣除门窗面积18.4平方米，平均每平方米用石灰0.2千克，一共用石灰多少千克？
<gadget id="calculator">10 * 8</gadget>
<output>80</output>

<gadget id="calculator">8 * 5</gadget>
<output>40</output>

<gadget id="calculator">5 * 10</gadget>
<output>50</output>

<gadget id="calculator">80 + 40 + 50</gadget>
<output>170</output>

<gadget id="calculator">170 * 2</gadget>
<output>340</output>

<gadget id="calculator">340 - 80 - 18.4</gadget>
<output>241.6</output>

<gadget id="calculator">241.6 * 0.2</gadget>
<output>48.32</output>

<result>48.32</result>