How many field goals did Carter get when he had 0 extra points?
CREATE TABLE "michigan_28_wisconsin_0" (
  "player" text,
  "touchdowns" real,
  "extra_points" real,
  "field_goals" real,
  "points" real
);
SELECT SUM("field_goals") FROM "michigan_28_wisconsin_0" WHERE "player"='carter' AND "extra_points"<0;