şu kodlar ne işe yarıyor

ngLastRow = .Cells.Find(What:="*", LookIn:=xlFormulas, _
                                SearchOrder:=xlByRows, _
                                SearchDirection:=xlPrevious).Row

lngLastCol = .Cells.Find(What:="*", LookIn:=xlFormulas, _
                                SearchOrder:=xlByColumns, _
                                SearchDirection:=xlPrevious).Column