Windows 7 / Office 2013

Hello all,
I am trying to use fields for use in our header.
I am trying to use the digits and the name separately.
Below is an example of what I am trying to do.
Any help would be appreciated.

Field1 = first six characters of filename
Field2 = omit characters 1 through 9 of filename

Details:
Each file will have it's own header.
Each file will have the same number of digits before the file name

File name: 221119 - DOMESTIC WATER PIPING SPECIALTIES.docx

Field 1 to Display: 221119
Field 2 to Display: DOMESTIC WATER PIPING SPECIALTIES

Thank you all for your help in advance,
Andre