Class 6 (1) students are divided into groups to participate in labor, one more person for every group of 3 people, one more person for every group of 4 people, and one more person for every group of 5 people. How many students are there at least in Class 61?
六(一)班的同学分组参加劳动，每3人一组多一人，每4人一组多一人，每5人一组还是多一人．六一班至少有学生多少人？
<gadget id="calculator">3 * 4 * 5</gadget>
<output>60</output>

<gadget id="calculator">60 + 1</gadget>
<output>61</output>

<result>61</result>