Match and Transfer Data from One Spreadsheet to a 2nd Spreadsheet

I have two spreadsheets (see attached). The first Spreadsheet is the MASTER.... the 2nd Spreadsheet is a SUPPLEMENTAL spreadsheet. Here is what I need you to do: The MASTER Spreadsheet has around 1,004 rows. The SUPPLEMENTAL Spreadsheet has 529 rows. All of the contacts / records in the SUPPLEMENTAL spreadsheet are also contained in the MASTER spreadsheet. The SUPPLEMENTAL spreadsheet has some data located in columns K, L and M (titled DZ Cell, GOP Cell, and DZ Email). I need someone to CAREFULLY take all of the data in columns K, L, and M and PASTE IT INTO THE CORRECT MATCHING RECORDS in the MASTER Spreadsheet. I need this done in the next few hours!