On a map with a scale of 1:1000, the length of the school playground is 8 cm and the width is 3.5 cm. What is the actual area of the playground in square meters?
在比例尺是1：1000的地图上，量得学校操场的长8厘米，宽3.5厘米，操场的实际面积是多少平方米．
<gadget id="calculator">1 / 1_000</gadget>
<output>1/1_000 = around 0.001</output>

<gadget id="calculator">3.5 / (1/1_000) / 100</gadget>
<output>35</output>

<gadget id="calculator">8 / (1/1_000) / 100</gadget>
<output>80</output>

<gadget id="calculator">35 * 80</gadget>
<output>2_800</output>

<result>2_800</result>