CREATE TABLE table_68704 ("Bellarine FL" TEXT, "Wins" FLOAT, "Byes" FLOAT, "Losses" FLOAT, "Draws" FLOAT, "Against" FLOAT)

What is the sum of losses for Geelong Amateur, with 0 byes?
SELECT SUM("Losses") FROM table_68704 WHERE "Bellarine FL" = 'geelong amateur' AND "Byes" < '0'
SELECT SUM("Losses") FROM "table_68704" WHERE "Bellarine FL" = 'geelong amateur' AND "Byes" < '0'