The area of a rectangle is 240 square centimeters, and the length and width are two adjacent natural numbers. What is the perimeter of the rectangle in centimeters?
一个长方形的面积是240平方厘米，长和宽是相邻的两个自然数，这个长方形的周长是多少厘米？
<gadget id="calculator">15 + 16</gadget>
<output>31</output>

<gadget id="calculator">31 * 2</gadget>
<output>62</output>

<result>62</result>