On a map with a scale of 1:2000, the school playground is 5 cm long and 4 cm wide. How many square meters does the school playground actually occupy?
在比例尺是1：2000的地图上，量得学校的操场长5厘米，宽4厘米，求学校操场的实际占地面积是多少平方米？
<gadget id="calculator">1 / 2_000</gadget>
<output>1/2_000 = around 0.0005</output>

<gadget id="calculator">5 / (1/2_000) / 100</gadget>
<output>100</output>

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

<gadget id="calculator">100 * 80</gadget>
<output>8_000</output>

<result>8_000</result>