A potted flower is placed at a certain distance on the edge of a circular flower bed with a radius of 4 meters. There are 40 potted flowers in total. What is the distance between two adjacent potted flowers?
半径为4米的圆形花坛边上每隔一定距离摆一盆花，一共摆了40盆花，每相邻两盆花之间的距离为多少米
<gadget id="calculator">2 / 40</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">3.14 * 4 * (1/20)</gadget>
<output>0.628</output>

<result>0.628</result>