Table:
text: 1982 Senior PGA Tour
Tournament results
Tournament results
Date_ Tournament Location_ Purse_ Winner Score _1st_Prize_
Sep 19 Merrill Lynch/Golf Digest Commemorative Pro-Am Rhode Island 125000 Billy Casper (2) 206 (-10) 22500
Oct 17 Suntree Classic Florida 135000 Miller Barber (5) 264 (-24) 22500
Oct 24 Hilton Head Seniors International South Carolina 112500 Miller Barber (6) Dan Sikes (1) 138 (-6) 15000

Question: What is the largest 1st prize ($) at the South Carolina location among results from the 1982 Senior PGA Tour Tournament?