A rectangular paddy field, on a map with a scale of 1:2000, it is 25 cm long and 15 cm wide; what is the actual area of the paddy field in square meters?
一块长方形水田，在比例尺1：2000的地图上，它长25厘米，宽15厘米；水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">25 / (1/2_000) / 100</gadget>
<output>500</output>

<gadget id="calculator">15 / (1/2_000) / 100</gadget>
<output>300</output>

<gadget id="calculator">500 * 300</gadget>
<output>150_000</output>

<result>150_000</result>