On the school floor plan with a scale of (1/100), the measured length of the classroom is 4 cm, and the width is 3 cm. What is the actual area of the classroom in square meters?
在比例尺是(1/100)的学校平面图上，量得教室的长是4厘米，宽是3厘米．教室的实际面积是多少平方米．
<gadget id="calculator">1 / 100</gadget>
<output>1/100 = around 0.01</output>

<gadget id="calculator">4 / (1/100) / 100</gadget>
<output>4</output>

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

<gadget id="calculator">4 * 3</gadget>
<output>12</output>

<result>12</result>