SELECT MAX("180s") FROM table_24018 WHERE "Legs Won" = '45'
How many 180s have legs won of 45?
CREATE TABLE table_24018 (
    "Player" text,
    "Played" real,
    "Legs Won" real,
    "Legs Lost" real,
    "LWAT" real,
    "100+" real,
    "140+" real,
    "180s" real,
    "High Checkout" real,
    "3-dart Average" text
)