Try the Spanish group at microsoft.public.es.excel

--
HTH

Bob Phillips

(replace somewhere in email address with gmail if mailing direct)

"Rodrigo Ferreira" wrote in message
...
A
15
26
65
55
68

I would some function like this:
S = Sa - [int(Sa/30) * 30]
S - Sum (total)
Sa - Last Sum (column A)

I hope somebody understand... Cause I don't know how can I explain in
English...

Rodrigo Ferreira