Table.InsertRow - Sum one Column to cell

[Anonymous]

Hi, i got this table:

The last row is a step where i have used this code to create the the step. 

#"Grouped Rows" = Table.Group(#"Changed Type", {"Source.Name"}, {{"Count", each Table.InsertRows(_,Table.RowCount(_),{[Source.Name="", Kontoart=39100, Stedsart="", #"Beskrivelse - Prognose"="Tekst", År=2020, Periode=1, Beløp=5]})}}),

In inserted rows column "Beløp" i want to sum all the values above.  What code do i put in instead og "5"? 

Bonus task: I also want to use an "if" statement to sum only if Column "Stedsart" is "47700"   

[Anonymous · Accepted solution]

prova questa:

#"Grouped Rows" = Table.Group(#"Changed Type", {"Source.Name"}, {{"Count", each Table.InsertRows(_,Table.RowCount(_),{[Source.Name="", Kontoart=39100, Stedsart="", #"Beskrivelse - Prognose"="Tekst", År=2020, Periode=1, Beløp=List.Sum([Belop])]})}}),

Bonus task: quale riga della colonna Stedsart deve essere controllata?