comma separator

SUGGESTED

I can see this question being asked before (many many times) but no solution seems to be available.

I want the numbers in sage to be shown with a comma separator for the thousands. It's so hard to read long lists of long numbers. Can this be done ? I've gone to the environment tab but I don't have an option to select anything for this. This is main screens not reports

If I at least knew it absolutely can't be done then I can give up trying !