The perimeter of a flower bed is 47.1 meters. Xiao Ming rolls a hoop around the flower bed. The diameter of the hoop is 30 cm. How many times does the hoop need to go around the flower bed?
一个花坛的周长是47.1米．小明在花坛周围滚铁环，铁环直径是30厘米，围着花坛转一周，铁环要转多少圈？
<gadget id="calculator">30 / 100</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">3.14 * (3/10)</gadget>
<output>0.942</output>

<gadget id="calculator">47.1 / 0.942</gadget>
<output>50</output>

<result>50</result>