A rectangular sports field has a width of 25 meters and a perimeter of 200 meters. What is its area in square meters?
一个长方形体育活动场地宽是25米，周长是200米，它的面积是多少平方米？
<gadget id="calculator">200 / 2</gadget>
<output>100</output>

<gadget id="calculator">100 - 25</gadget>
<output>75</output>

<gadget id="calculator">75 * 25</gadget>
<output>1_875</output>

<result>1_875</result>