On the first day after the heavy snowfall, Da Liang and his father measured the circumference of a circular flowerbed together on foot. Their starting point and walking direction were exactly the same. Da Liang's step length is 54 cm, and his father's step length is 72 cm. Since their steps overlap, only 60 footprints are left on the snow. What is the perimeter of this garden in meters?
大雪后的第一天，大亮和爸爸共同步测一个圆形花圃的周长，他俩的起点和走的方向完全相同．大亮每步长54厘米，爸爸每步长72厘米，由于两人的脚步有重合，所以雪地上只留下60个脚印．求这个花圃的周长是多少米？
<gadget id="calculator">72 * 3</gadget>
<output>216</output>

<result>216</result>