There is a circular flower bed with a circumference of 25.12 meters. Now a fence should be set up around the flower bed 1 meter outside the flower bed. How long is the fence?
有一个周长是25.12米的圆形花坛，现在要在花坛外1米的地方绕花坛设置一个围栏，这个围栏长多少米？
<gadget id="calculator">2 + 1</gadget>
<output>3</output>

<gadget id="calculator">3 * 2 * 3.14</gadget>
<output>18.84</output>

<result>18.84</result>