Daily average

Hi,

I have a table with this columns:

RecordDate | TimeTracked | TeamMember | Activity

I need to get the daily average of time tracked for a user and an activity.

I'm using this measure

CALCULATE(AVERAGEX(VALUES(TimeExport[RecordDate]), TimeExport[TotalTracked]))

but this does not have in account days with no time tracked, this only gives me the average for all days with time tracked.

How can I do?