CREATE TABLE table_name_88 (long NUMBER, avg_g VARCHAR2, gp_gs VARCHAR2)

Name the highest Long that has an Avg/G smaller than 8.4, and an GP-GS of 4 0?
SELECT MAX(long) FROM table_name_88 WHERE avg_g < 8.4 AND gp_gs = "4–0"
SELECT MAX("long") FROM "table_name_88" WHERE "4–0" = "gp_gs" AND "avg_g" < 8.4