This is idea: There are two tables (they'll probably be in Sharepoint) which show which package/tarifa a client is using, when it's expiring and how much it costs.
I still don't have data, not sure if it can be done in Power BI, but I made sample tables. Tables would look something like this:
A table in dashboard which has all necessery data:
It shows that Mike is using Internet package, subscription last for 2 months and for that period of 2 months it costs him 100 USD. Very simple. Now, we will assume that Mike is going to use same subscription for the next two years. Subscription time remains the same, price also. Same goes for other customer - Anita, Jose and David. Is it possible (following assumptions stated above) to calculate how much each customer will pay in next two years? Now I can see that by 1.11.2018. David will extend his subscription 4 times and it'll cost him total 800 USD...
Can this be done in Power BI with DAX functions?