Does anyone know an easy way to remove a set # of characters of a string??

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Hello,

Does anyone know how to remove a designated # of characters from a string?  In the example below, we do not want to display the first (7) characters of the string or the (AG0300_) from this field.  I've tried to use a LTRIM, however because the number of characters from the LEFT vary we thought it would be easier to remove the first 7 characters beginning from the right (in red).

Example:

AG0300_Senior FRCH Representative_ABC1_P03

Thanks in advance!