There is a circular flowerbed with a diameter of 16 meters in the park, and a 2-meter-wide walkway surrounds it. The walkway is also changed into a flowerbed. What is the circumference of the flowerbed now?
公园里有一个直径为16米的圆形花圃，在它的周围环绕着一条2米宽的走道，走道也改成花圃，现在花圃的周长是多少？
<gadget id="calculator">16 + 2 + 2</gadget>
<output>20</output>

<gadget id="calculator">3.14 * 20</gadget>
<output>62.8</output>

<result>62.8</result>