Dim tablo() As Double
Dim i As Integer
Dim nombre As Double
nombre = CDbl(TextBox1)
ReDim tablo(ListBox1.ListCount - 1, 1)
For i = 0 To ListBox1.ListCount - 1
tablo(i, 0) = ListBox1.List(i, 1)
Next i
For i = 0 To UBound(tablo)
tablo(i, 1) = tablo(i, 0) * nombre
Next i
For i = 0 To UBound(tablo)
ListBox1.List(i, 3) = tablo(i, 1)
Next i