Private Sub Worksheet_Change(ByVal Target As Range)
Set Target = Intersect(Target, Range("h9:h10"))
If Not Target Is Nothing Then
Application.EnableEvents = False
For Each Target In Target 'si entrées/effacements multiples
If IsNumeric(CStr(Target)) Then Target = Target * 1.5
Range("K10") = Range("K10") * 1.3
Range("K11") = Range("K11") * 2
Next
Application.EnableEvents = True
End If
End Sub