There is a small rectangular playground with a length of 50 meters. It takes 2 minutes to go around the playground at a speed of 80 meters per minute. What is the area of this small playground in square meters?
有一个长方形小操场，长50米，明明以每分钟80米的速度绕操场一周，需要2分钟，这个小操场的面积是多少平方米？
<gadget id="calculator">2 / 2</gadget>
<output>1</output>

<gadget id="calculator">80 * 1</gadget>
<output>80</output>

<gadget id="calculator">80 - 50</gadget>
<output>30</output>

<gadget id="calculator">50 * 30</gadget>
<output>1_500</output>

<result>1_500</result>