A classroom is 12 meters long and 9 meters wide. It is drawn on a floor plan with a scale of 1:300. What is the area in square centimeters of the classroom?
一间教室长12米，宽9米，画在比例尺是1：300的平面图上，这间教室的图上面积是多少平方厘米．
<gadget id="calculator">1 / 300</gadget>
<output>1/300 = around 0.003333</output>

<gadget id="calculator">12 * 100 * (1/300) * 9 * 100 * (1/300)</gadget>
<output>12</output>

<result>12</result>