Yuanyuan, mother and father do morning exercises on the school's circular plastic track. Yuanyuan takes 5 minutes per lap, mother 4 minutes per lap, and father 3 minutes per lap. Start running at the same time, at least how many minutes will it take for the three of them to run together?
媛媛、妈妈和爸爸在学校的圆形塑胶跑道晨练，媛媛每圈要5分钟，妈妈每圈4分钟，爸爸每圈3分钟．开始同时跑，至少要经过多少分钟他们三人才跑在一齐？
<gadget id="calculator">5 * 3 * 4</gadget>
<output>60</output>

<result>60</result>