乘法

Private Sub Command1_Click()
Dim c1 As Byte
Dim c2 As Byte
Dim a() As Byte
Dim b As String
Dim changdu As Long, i As Long
changdu = Len(text1.Text)
ReDim a(changdu)
For i = 1 To changdu
    b = Mid(Me.text1, Text, i, l)
    a(i) = Int(Val(b))
Next i
b = Me.text2.Text
c = Int(Val(b))
Dim rm As Byte
Dim r() As Byte
ReDim r(changdu)
Dim d As Byte
For i = changdu To 1 Step -1
    rm = a(i) * c + d
    
    

End Sub