On a drawing with a scale of 1:200, measure a rectangle with a length of 2.5cm and a width of 1.35cm. What is the actual area of the rectangle in square meters?
在比例尺是1：200的图纸上，量得一个长方形的长为2.5cm，宽为1.35cm，这个长方形的实际面积是多少平方米？
<gadget id="calculator">1 / 200</gadget>
<output>1/200 = around 0.005</output>

<gadget id="calculator">2.5 / (1/200) / 100</gadget>
<output>5</output>

<gadget id="calculator">1.35 / (1/200) / 100</gadget>
<output>2.7</output>

<gadget id="calculator">5 * 2.7</gadget>
<output>13.5</output>

<result>13.5</result>