If I understood correctly this could be a solution

😎

Foreign Sales X:=CALCULATE

( SUM(Sales[SalesAmount])

,ALL(Sales)

,FILTER(ALL('Market'),'Market'[Market]<>"Ireland")

)

Domestic Sales X:=CALCULATE

( SUM(Sales[SalesAmount])

,ALL(Sales)

,FILTER(ALL('Market'),'Market'[Market] = "Ireland")

)