有如下VB程序段:
s = Text1.Text
t = 0: Sum = 0
For i = 1 To len(s)
c = Mid(s, i, 1)
If c >= "0" And c <= "9" Then
t = t * 10 + Val(c)
ElseIf c >= "a" And c <= "z" Then
Sum = Sum + t
Else
t = 0
End If
Next i
Text2.Text = Str(Sum)
在文本框Text1中输入“123aBc456”,执行程序段,文本框Text2中显示的内容是( )