The perimeter of a rectangular flowerbed is 150.4 meters, and the known length is 50.2 meters. What is the area of this flowerbed in square meters?
一块长方形花圃的周长是150.4米，已知长是50.2米，这块花圃的面积是多少平方米？
<gadget id="calculator">150.4 / 2</gadget>
<output>75.2</output>

<gadget id="calculator">75.2 - 50.2</gadget>
<output>25</output>

<gadget id="calculator">50.2 * 25</gadget>
<output>1_255</output>

<result>1_255</result>