The computer room of the school is paved with 1800 floor tiles with a length of 40cm, a width of 20cm, and a thickness of 1cm. What is the area of this computer room in square meters?
学校微机室铺了1800块长40cm宽20cm，厚1cm的地砖．这个微机室的面积是多少平方米？
<gadget id="calculator">1_800 / 10_000</gadget>
<output>9/50 = around 0.18</output>

<gadget id="calculator">40 * 20 * (9/50)</gadget>
<output>144</output>

<result>144</result>