SELECT "Played" FROM table_58665 WHERE "Goal Difference" = '+51'
What is Played, when Goal Difference is '+51'?
CREATE TABLE table_58665 (
    "Position" real,
    "Team" text,
    "Played" real,
    "Drawn" real,
    "Lost" real,
    "Goals For" real,
    "Goals Against" real,
    "Goal Difference" text,
    "Points 1" real
)