Average Time Spent Per Order By Month

I am currently measuring the performance of our various warehouse employees by calculating minutes spent per order per day using this MEASURE:

TimeSpentPerOrder = CALCULATE(DIVIDE(DATEDIFF(MIN(ShipVerifiedReport[Scan Date]),MAX(ShipVerifiedReport[Scan Date]),MINUTE),[NumberOfOrdersProcessed]))

Here is a sample of my data:

And here is a sample of the results from the above formula:

Basically, I'd like to divide the [Distinctcount] number of working days by the sum of minutes per order. Since the minutes per order is calculated using a measure, I am unable to do so very easily. Any assistance is appreciated on the matter.

Thank you!