How count row behaves in denominator in Divide formula

[Anonymous]

AvgSalesPerDistinctProduct :=
DIVIDE (
                SUMX ( Sales, Sales[Quantity] * Sales[Net Price] ),
                COUNTROWS ( DISTINCT ( 'Product'[Product Code] ) )
             )

[jthomson]

OK, you've posted a measure - what's your actual question?

[Anonymous]

divide accepts two parameters right, so in the parameter i am multiplying th quantity with price, and the other half i did not understad can you help me understand it. 

Thanks in advance