A certain class of students in the school are doing exercises, divided into groups of 3, 4, and 5, all of which are just finished. How many students are there at least in this class?
学校某班学生做操，分为3人一组，4人一组，5人一组都刚好分完．这个班级至少有几个学生？
<gadget id="calculator">3 * 4 * 5</gadget>
<output>60</output>

<result>60</result>