macro for invoice totals

[Esrei]

I have this macro that inserts lines and copies a invoice header.

Now I want to total the invoice.

In the first row after a value in B in E the word totals must be inserted,
H, I and K must be summed the amount of lines differ on each invoice but
there is a heading from where it must be summed. CTNS(H), QTY(I), Total(K)

Thanks a lot.



Public Sub Deilv2()
Dim LastRow As Long
Dim row_index As Long
Dim rng As Range
Set rng = Range("B2:K25")
Application.ScreenUpdating = False
LastRow = ActiveSheet.Cells(Rows.Count, "b").End(xlUp).Row
For row_index = LastRow - 1 To 26 Step -1
If Cells(row_index, "B").Value <> _
Cells(row_index + 1, "B").Value Then
Cells(row_index + 1, "B").Resize(26).EntireRow. _
insert Shift:=xlDown
rng.Copy Destination:=Cells(row_index + 1, "B").Offset(2)
End If
Next
Application.ScreenUpdating = True
End Sub