The diameter of a circular flower bed is 8m. Place potted flowers around the flower bed, and place a pot every 1.57m. How many potted flowers can be placed in total?
一个圆形花坛的直径是8m，在花坛的周围摆放盆花，每隔1.57m放一盆，一共可以放几盆花？
<gadget id="calculator">8 / 1.57</gadget>
<output>5.095541</output>

<gadget id="calculator">3.14 * 5.095541</gadget>
<output>15.999999</output>

<result>15.999999</result>