On a school map with a scale of 1:2500, the length of the playground is 5cm and the width is 3cm. How many square meters is the area of the school playground?
在一幅比例尺是1：2500的学校地图上，量得操场的长是5cm，宽是3cm，学校操场的面积是的多少平方米？
<gadget id="calculator">1 / 2_500</gadget>
<output>1/2_500 = around 0.0004</output>

<gadget id="calculator">5 / (1/2_500) / 100</gadget>
<output>125</output>

<gadget id="calculator">3 / (1/2_500) / 100</gadget>
<output>75</output>

<gadget id="calculator">125 * 75</gadget>
<output>9_375</output>

<result>9_375</result>