Count how many cells in a row are NOT empty

Please look at the file attached.
billigarecept.se/file.zip (could not upload it to the message (tried several times..), so just download it from the link)

I need macro that will do the following:
Check if there are NON EMPTY cells on columns O to BD and write the results (how many non empty cells) in column N
If the macro will work correctly, the results will look exactly like the few values i entered manually in column N.

IMPORTANT: the amount of columns AFTER column N can be changed, sometimes it can be only 1 column (column O), sometimes 10 columns (column O to X) and sometimes 1000 columns... The macro should work with any amount of columns after column N

Thanks,
Sami

Exactly what i needed! thanks a lot!