There is a circular flower bed with a circumference of 28.26 meters. Now it is necessary to install a railing 1 meter outside the flower bed. How long is the railing?
有一个圆形的花坛，周长28.26米，现在要在花坛外1米的地方安装一道栏杆，栏杆长多少米？
<gadget id="calculator">28.26 / 3.14 / 2</gadget>
<output>4.5</output>

<gadget id="calculator">4.5 + 1</gadget>
<output>5.5</output>

<gadget id="calculator">3.14 * 5.5 * 2</gadget>
<output>34.54</output>

<result>34.54</result>