The length of a rectangular test field measured on a drawing with a scale of 1:2000 is 4 cm and the width is 3 cm. Calculate the actual area of this test field in square meters?
在比例尺是1：2000的图纸上量得一块长方形试验田的长是4厘米，宽是3厘米，算一算这块试验田的实际面积是多少平方米？
<gadget id="calculator">1 / 2_000</gadget>
<output>1/2_000 = around 0.0005</output>

<gadget id="calculator">4 / (1/2_000) / 100</gadget>
<output>80</output>

<gadget id="calculator">3 / (1/2_000) / 100</gadget>
<output>60</output>

<gadget id="calculator">80 * 60</gadget>
<output>4_800</output>

<result>4_800</result>