The circumference of a circular flower bed is 125.6 meters. If the flower bed needs to be paved with lawn, if it costs 32 yuan per square meter, how much will it cost to pave the lawn?
一个圆形花坛的周长是125.6米，要给这个花坛铺上草坪，如果每平方米要32元钱，铺完这个草坪需要多少钱？
<gadget id="calculator">125.6 / 3.14 / 2</gadget>
<output>20</output>

<gadget id="calculator">20 ** 2</gadget>
<output>400</output>

<gadget id="calculator">3.14 * 400 * 32</gadget>
<output>40_192</output>

<result>40_192</result>