The fifth-grade students can plant flowers in groups of 12 or 15, and they can be divided exactly. How many people are there at least in the fifth grade to participate in flower planting?
五年级同学栽花，按12人一组或按15人一组都能正好分完．五年级参加栽花的至少有多少人？
<gadget id="calculator">2 * 2 * 3 * 5</gadget>
<output>60</output>

<result>60</result>