A rectangular playground is drawn on the map with a scale of (1/10000), the length is 5cm, and the width is 3cm. What is the actual area of the playground?
一块长方形操场，用(1/10000)的比例尺画在图上，长5cm，宽3cm，那么操场的实际面积是多少？
<gadget id="calculator">1 / 10_000</gadget>
<output>1/10_000 = around 0.0001</output>

<gadget id="calculator">5 / (1/10_000) / 100</gadget>
<output>500</output>

<gadget id="calculator">3 / (1/10_000) / 100</gadget>
<output>300</output>

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

<result>150_000</result>