One day after the heavy snowfall, Xiaoguang and his father measured the circumference of a circular flowerbed together. They walked in exactly the same starting point, route, and direction, and their shoes were the same size. Each step of Xiaoguang is 54 cm long, and each step of Dad is 72 cm long. Because the footprints of the two overlap, only 60 footprints are left on the snow. Find the perimeter of the garden.
大雪后的一天，小光与爸爸共同测一圆形花圃的周长，他们走的起点、路线、方向完全相同，鞋子大小也相同．小光每步长54厘米，爸爸每步长72厘米，由于两人的脚印有重合，所以雪地上只留下60个脚印．求这个花圃的周长．
<gadget id="calculator">18 * 3 * 4</gadget>
<output>216</output>

<gadget id="calculator">216 / 54</gadget>
<output>4</output>

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

<gadget id="calculator">3 - 1</gadget>
<output>2</output>

<gadget id="calculator">4 + 2</gadget>
<output>6</output>

<gadget id="calculator">60 / 6</gadget>
<output>10</output>

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

<result>2_160</result>