I'm taking column A which has a header, column B has a header. Column A is a
numbering sequence starting with 2.1 in Column A Row 2, Column A Row 3 should
be 2.2, Column A Row 3 should be 2.3, etc down Column A to match the data in
Column B.

Column A
2.1
2.2
2.3
2.4
2.5
etc.
on down Column A

Column B
acap
at-echo
at-nbp
at-rtmp
at-zis
auth
etc.

How can I have this auto file down column A with numbers that have decimals?