On the drawing with a scale of 1:300, the length of the classroom is 3 cm and the width is 2 cm. What is the actual area of the classroom in square meters?
在比例尺1：300图纸上，量得教室的长是3厘米，宽是2厘米，教室的实际面积是多少平方米．
<gadget id="calculator">1 / 300</gadget>
<output>1/300 = around 0.003333</output>

<gadget id="calculator">3 / (1/300) / 100</gadget>
<output>9</output>

<gadget id="calculator">2 / (1/300) / 100</gadget>
<output>6</output>

<gadget id="calculator">9 * 6</gadget>
<output>54</output>

<result>54</result>