Sum in quarter

These are all the formulas that I created:

Days table:

List of days from Jul-2016 to today -> DATE format

Quarter (2016-Q3, 2017-Q4, etc) -> TEXT format

installed-base table:

     Number of installed systems: 

     =[Installed Systems]-[Uninstalled Systems]

     For cumulative sum of installed base through days

     =SUMX(FILTER(ALLSELECTED('list-days'[Days]);'list-days'[Days]<=MAX ('list-days'[Days]));[Installed Base])

Experiment data:

     Number of run per day

     =COUNT('experiment-data'[Experiment Name])

     Run/Installed Base per day:

     =CALCULATE(DIVIDE([Number of run per day];[Installed Base [Day]]]))

If I plot this using DAY as X axes and Y it is ok

If I change the X axes with year-quarter, what I obtain is TOTAL NUMBER OF RUN/TOTAL NUMBER OF SYSTEMS, but I would like to have the SUM of each NUMBER OF RUN/NUMBER OF SYSTEMS per day

If I try to add the TOTALQTD to this formula, and plot it QUARTER vs. FORMULA, I obtain the same

Cumulative sum over a quarter:
=SUMX(FILTER(ALLSELECTED('list-days'[Day]);'list-days'[Day]<=MAX('list-days'[Day]));CALCULATE([Run/Installed Base [Day]]]))

The first row for the first quarter is ok, but the second quarter includes the total of the first quarter + new values and so on