Total Donations let share - how can i do this

Dear community, I have a special problem.
I would like to divide the total number of donations by 12.
Then I would like to output this number in the frontend.
How can I do that? I have already downloaded Sourcerer. But now I need the individual variables so that I can start the calculation.


Can someone help me please?

Hi Dominik,
Sorry, could you please explain more details your idea?
Thanks
Dam