Table schema:
CREATE TABLE table_name_81 (total INTEGER, year_s__won VARCHAR, to_par VARCHAR)

Question: What is the sum of Total, when Year(s) Won is "1966 , 1970 , 1978", and when To par is less than 4?
SQL: SELECT SUM(total) FROM table_name_81 WHERE year_s__won = "1966 , 1970 , 1978" AND to_par < 4