>I thought about displaying just the value, but the final user has to manipulate the data so the total has to be updated by themselves, so ths would be my very last option. regarding to the other (sum()) how can I do a sum of not concurrent cells, like this example
>A1
>A25
>A35
>A164
>A1255
>???

I would store the intermediate result somewhere, in the variable, or in the hidden cell.