VB求组合数

'求组合数C(m,n)=n!/(m!(n-m)!) m=6,n=10
Private Function fact(x As Integer) As Long
    Dim i As Integer, f As Long
    f = 1
    For i = 1 To x
        f = f * i
    Next i
    fact = f
End Function
Private Sub Command1_Click()
    Dim m%, n%, u As Long, v As Long, w As Long
    m = 6: n = 10
    u = fact(m)
    v = fact(n)
    w = fact(n - m)
    Print v / (u * w)
End Sub