Select the column with the accounts title and Copy&Paste (Paste Values) to replace the FSMACCOUNTTITLE formula with text.
Insert two columns to the right of the column with the accounts title
Select the column with the accounts title
Click the ‘Data’ tag and click the ‘Text to Columns’ button
Select ‘Fixed width’
Click ‘Next’
Create a break line after the prefix
Click ‘Next’
Specify the ‘Destination’
Click ‘Finish’
(For the particularity of this sample, where the result for the accounts without an account number is ‘#NAME?”, we simply Copy&Paste(Paste Values) for each case)
Delete the column with the original accounts title and the column with the prefixes