CREATE TABLE table_name_74 (gold INT, silver VARCHAR, total VARCHAR)

What is the sum of the gold medals of the nation with 4 silvers and more than 6 total medals?
SELECT SUM(gold) FROM table_name_74 WHERE silver = 4 AND total > 6
SELECT SUM("gold") FROM "table_name_74" WHERE "silver" = 4 AND "total" > 6