There is a rectangular fish pond with a length of 52 meters. In order to expand the water surface, the length has been increased by 8 meters, and the area has increased by 360 square meters. What is the original area of the fish pond?
有一个长方形鱼池的长是52米，为了扩大水面，现在又把长增加了8米，面积就增加了360平方米．这个鱼池原来的面积是多少平方米？
<gadget id="calculator">360 / 8</gadget>
<output>45</output>

<gadget id="calculator">52 * 45</gadget>
<output>2_340</output>

<result>2_340</result>