What number is in Bois de Warville with a time less than 810?
CREATE TABLE table_61367 (
    "Number" real,
    "Time" real,
    "Aircraft" text,
    "Opponent" text,
    "Location" text
)
SELECT SUM("Number") FROM table_61367 WHERE "Location" = 'bois de warville' AND "Time" < '810'
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 number is in Bois de Warville with a time less than 810? ### Input: CREATE TABLE table_61367 (
    "Number" real,
    "Time" real,
    "Aircraft" text,
    "Opponent" text,
    "Location" text
) ### Response: SELECT SUM("Number") FROM table_61367 WHERE "Location" = 'bois de warville' AND "Time" < '810'