What mean total had a league number of 18, Richard Logan as a player, and a play-offs number smaller than 1?
CREATE TABLE table_77799 (
    "Player" text,
    "Club" text,
    "League" real,
    "Play-offs" real,
    "FA Cup" real,
    "FA Trophy" real,
    "Total" real
)
SELECT AVG("Total") FROM table_77799 WHERE "League" = '18' AND "Player" = 'richard logan' AND "Play-offs" < '1'
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: What mean total had a league number of 18, Richard Logan as a player, and a play-offs number smaller than 1? ### Input: CREATE TABLE table_77799 (
    "Player" text,
    "Club" text,
    "League" real,
    "Play-offs" real,
    "FA Cup" real,
    "FA Trophy" real,
    "Total" real
) ### Response: SELECT AVG("Total") FROM table_77799 WHERE "League" = '18' AND "Player" = 'richard logan' AND "Play-offs" < '1'