Add a / in the middle of string

I need to be able to insert a / in the middle of a string, so this 125674567 ends up like this 12/567/4567.

I am using SQL Server 2005.
I have used the SUBSTRING Function to display this, as below:
    SUBSTRING(Holding, 1, 2) + '/' +
    SUBSTRING(Holding, 3, 3) + '/' +
    SUBSTRING(Holding, 6, 11)
      FROM TagOrder_Import_RawData

How would I be able to update the records in the table?

Any help would be appreciated
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Jim HornMicrosoft SQL Server Developer, Architect, and AuthorCommented:
Unless I'm missing something here...
UPDATE TagOrder_Import_RawData
SET Holding = 
    SUBSTRING(Holding, 1, 2) + '/' +
    SUBSTRING(Holding, 3, 3) + '/' +
    SUBSTRING(Holding, 6, 11) 

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Disclaimer:  HOLY GOD MAKE A BACKUP FIRST, and you can't sue me if this goes wrong.

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Morpheus7Author Commented:
Many thanks
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