What is the sum of losses for Geelong Amateur, with 0 byes?
CREATE TABLE "2010_ladder" (
  "bellarine_fl" text,
  "wins" real,
  "byes" real,
  "losses" real,
  "draws" real,
  "against" real
);
SELECT SUM("losses") FROM "2010_ladder" WHERE "bellarine_fl"='geelong amateur' AND "byes"<0;