One day after the heavy snowfall, Doudou and Dad started from the same point and walked along the same direction to measure the circumference of a circular flowerbed. Each step of Doudou is 54 cm long, and each step of Dad is 72 cm long. Since the footprints of the two people overlap, only 60 footprints are left on the snow. Question: What is the perimeter of the garden?
大雪后的某一天，豆豆和爸爸从同一点出发沿着同一方向分别步测一个圆形花圃的周长．豆豆每步长54厘米，爸爸每步长72厘米，由于两个人的脚印有重合，所以雪地上只留下60个脚印．请问：花圃的周长是多少？
<gadget id="calculator">60 / 6</gadget>
<output>10</output>

<gadget id="calculator">72 * 3</gadget>
<output>216</output>

<gadget id="calculator">10 * 216</gadget>
<output>2_160</output>

<result>2_160</result>