Update based on column contents VBA

I have a excel page with 40k plus records
Using VBA I would like to

I need to look in column H and find where the FIRST  7 characters are a :

4 digit number space - space
Example:  "9021 - "

When that is found place just the 4 digits (General formatting) in column A

ColA          ColH
                 9012 - auhviwbedfvivbfpwebfr
                 auhviwbedfvivbfpwebfr
                 9012 - (*&^(^&RUO&*)HJOGUO


gets me this
ColA          ColH
9012           9012 - auhviwbedfvivbfpwebfr
                   auhviwbedfvivbfpwebfr
 9016          9016 - (*&^(^&RUO&*)HJOGUO
Larry Bristersr. DeveloperAsked:
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Shanan212Commented:
=IF(MID(H2,6,1)="-",LEFT(H2,4),"")

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I am assuming your data starts at "H2", if not change it to "H1" or whichever cells it starts
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Glenn RayExcel VBA DeveloperCommented:
I agree with a non-programmatic solution like Shanan212 suggested.  

I would further refine the function to test specifically for a four-digit value followed by the "space-hyphen-space" string as follows:

In cell A2 (presuming data starts in row 2) and copied on down:

=IF(AND(ISNUMBER(VALUE(LEFT(H2,4))),MID(H2,5,3)=" - "),VALUE(LEFT(H2,4)),"")

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Shanan212Commented:
Sub sample()

Dim iNum As Long, Count As Long, sa As String
iNum = ActiveSheet.Cells(Rows.Count, 8).End(xlUp).Offset(0, 0).Row

Count = 1

Do While Not Count = iNum + 1
    If (Mid(Cells(Count, 8).Value, 6, 1) = "-") Then
        Cells(Count, 1).Value = Left(Cells(Count, 8), 4)
    End If
    Count = Count + 1
Loop

End Sub

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VBA
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Larry Bristersr. DeveloperAuthor Commented:
I came up with a non-progrogramatic approach with this...

=RIGHT(LEFT(h3, SEARCH(" - ",H3,1)),5)

So you guys put me on the right track.

Want to split points?
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Larry Bristersr. DeveloperAuthor Commented:
Put me on the right track.  Thanks
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