More than 30 years later, USC professor pays off debt. Real estate broker David Hyun and his former student at USC Marshall School of Business, Frank Gangi, president of Gangi Development, are having Peking duck together, which Hyun promised his business students if they made $1 million within 5 years of graduation. Frank Gangi was in Hyun's real estate development class in 1984. Hyun is an Arcadia resident, architect, and real estate broker.