Convert geographical coordinates to degree

Hello members !
I have 2 columns of geographical coordinates in following format : Lat: 01 28 15 Long: 104 15 10
and I need to convert these 2 columns to degree : Lat: 1.47 Long: 104.25
I found this code from microsoft support page for the case that coordinates come with degree ° minute ' and second " signs. However, in my case, I don't have these signs.

Function Convert_Decimal(Degree_Deg As String) As Double
   ' Declare the variables to be double precision floating-point.
   Dim degrees As Double
   Dim minutes As Double
   Dim seconds As Double
   ' Set degree to value before "°" of Argument Passed.
   degrees = Val(Left(Degree_Deg, InStr(1, Degree_Deg, "°") - 1))
   ' Set minutes to the value between the "°" and the "'"
   ' of the text string for the variable Degree_Deg divided by
   ' 60. The Val function converts the text string to a number.
   minutes = Val(Mid(Degree_Deg, InStr(1, Degree_Deg, "°") + 2, _
             InStr(1, Degree_Deg, "'") - InStr(1, Degree_Deg, _
             "°") - 2)) / 60
    ' Set seconds to the number to the right of "'" that is
    ' converted to a value and then divided by 3600.
    seconds = Val(Mid(Degree_Deg, InStr(1, Degree_Deg, "'") + _
            2, Len(Degree_Deg) - InStr(1, Degree_Deg, "'") - 2)) _
            / 3600
   Convert_Decimal = degrees + minutes + seconds
End Function

Thank you