The scale of a drawing is 1:40. The rectangular electric classroom in the picture is 60 cm long and 0.45 m wide. How many square meters is the actual area of the classroom?
一张图纸的比例尺是1：40，图中的长方形电教室长60厘米，宽0.45米．电教室的实际面积是多少平方米？
<gadget id="calculator">1 / 40</gadget>
<output>1/40 = around 0.025</output>

<gadget id="calculator">60 / (1/40) / 100</gadget>
<output>24</output>

<gadget id="calculator">100 / (1/40) / 100</gadget>
<output>40</output>

<gadget id="calculator">24 * 0.45 * 40</gadget>
<output>432</output>

<result>432</result>