I have a calculation were we calculate the average workdays per month for a country or region (region is average, on country level the average is just that number) for example: country 1 has 20 workdays, country 2 has 22. The average for the region is 21.
Now I need to have the # of workdays for a Quarter which should be calculated by adding the average of month 1 + month 2 + month 3. But how can I achieve this, because of the average is always calculate the average even with the quarter as a dimension, taking this average and do it times 3 causes differences so that doesn't work either.