Is there some documentation on how to use the +Column for reports? I have created simple +Columns using formulas such as fieldname*50 or fieldname1/fieldname2 etc. I would like to create a more complex formula but can't seem to figure it out. What I would like to do is take the sum values of a column and divide by the count of that column. I have tried typing in the following but it will not work:
(sum(fieldname))/(count(fieldname))