Hi all,
Ok don't laugh (to hard).
The goal is to insert a dynamic formula in Column 'I' Matching the last used cell in Column 'C'.
By dynamic, i mean the formula should advance each cell downward.

Private Sub Worksheet_Change(ByVal Target As Range)
Dim rCell As Range
Dim lLastrow As Long
With lLastrow = .Range("C65536").End(xlUp).Row
For Each rCell In .Range("I1:I" & lLastrow)
If rCell.Offset(6, 0).Value <> "" Then
rCell.FormulaR1C1 = "=IF(D2="","",(H2/G2))"
End If
Next rCell
End With
End Sub