Uncle Zhang’s family has a rectangular nursery. If the length and width of the nursery are increased by 5 meters at the same time, the area will increase by 225 square meters. What is the perimeter of the rectangular nursery in meters?
张大叔家有一个长方形苗圃，如果苗圃的长和宽同时增加5米，面积就增加225平方米，原来长方形苗圃的周长是多少米？
<gadget id="calculator">40 * 2</gadget>
<output>80</output>

<result>80</result>