sum product accumulative in power BI

[HRawash2]

i need to apply the below medule in power bi  as it accumulative sum product

[HRawash2]

i try Dax but EARLIER ( 'Table'[Number A] ) )   can't select  'Table'[Number A] )  and show error

[tamerj1]

@HRawash2 

Have you read my assumptions? If the assumptions are not correct please advise what is.

[tamerj1]

Hi @HRawash2 

Assuming Number A and Number B are columns in a data table ('Table') and you are looking for a calculated column the pkease try

Accumulated =
VAR T =
FILTER ( 'Table', 'Table'[Number A] <= EARLIER ( 'Table'[Number A] ) )
RETURN
DIVIDE (
SUMX ( 'Table', 'Table'[Number A] * 'Table'[Number B] ),
SUMX ( 'Table', 'Table'[Number B] )
)