what is the average number of losses an opponent has ?
CREATE TABLE table_204_623 (
    id number,
    "opponent" text,
    "goals" text,
    "wins" number,
    "draws" number,
    "losses" number,
    "+- goals" number,
    "matches" number,
    "qualified" number,
    "eliminated" number
)
SELECT AVG("losses") FROM table_204_623
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 is the average number of losses an opponent has ? ### Input: CREATE TABLE table_204_623 (
    id number,
    "opponent" text,
    "goals" text,
    "wins" number,
    "draws" number,
    "losses" number,
    "+- goals" number,
    "matches" number,
    "qualified" number,
    "eliminated" number
) ### Response: SELECT AVG("losses") FROM table_204_623