The farm needs to use iron wire to circle the largest circular fence on a rectangular grass field with a length of 80 meters and a width of 60 meters. If the iron wire is wound three times (not counting the joints), how many meters of iron wire are needed?
农场要在一块长80米，宽60米的长方形草地上用铁丝圈一个最大的圆形栅栏，若铁丝绕三圈(不计算接头处)，需要铁丝多少米？
<gadget id="calculator">3.14 * 60 * 3</gadget>
<output>565.2</output>

<result>565.2</result>