Formula to get value from a card visual

a strange request!

let me describe my scenario

If I have a number of card visuals each populating data from a different table, different formula/logic and each has a number of filters, if I need to sum the numbers from all visuals and put the sum in another card visual... in case I do not want to complicate the work and create a very long formula taking the conditions & filters for each in consideration

can I get the value from any visual and do some calculations before presenting the new number on another card ?