One way:

C20: =C5 & "@" & C6 & " a, b, c"

In article ,
maperalia wrote:

How can I copy information from two cells into another cell.
For example, I have the data "M" in cell C5 and the data "L" in the cell C6
and I want to copy the following in the cell C20: M@L a, b, c
So, "M" and "L" are always variables and the rest (@ a, b, c) are always the
same.

Thanks in advance.
Maperalia