CREATE TABLE table_37758 ("Player" TEXT, "Touchdowns" FLOAT, "Extra points" FLOAT, "Field goals" FLOAT, "Points" FLOAT)

How many field goals did Carter get when he had 0 extra points?
SELECT SUM("Field goals") FROM table_37758 WHERE "Player" = 'carter' AND "Extra points" < '0'
SELECT SUM("Field goals") FROM "table_37758" WHERE "Extra points" < '0' AND "Player" = 'carter'