How many values for founded when enrollment is 850?
CREATE TABLE table_24727 (
    "School" text,
    "Location" text,
    "Enrolment" real,
    "Founded" real,
    "Denomination" text,
    "Boys/Girls" text,
    "Day/Boarding" text,
    "School Colors" text
)
SELECT COUNT("Founded") FROM table_24727 WHERE "Enrolment" = '850'
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: How many values for founded when enrollment is 850? ### Input: CREATE TABLE table_24727 (
    "School" text,
    "Location" text,
    "Enrolment" real,
    "Founded" real,
    "Denomination" text,
    "Boys/Girls" text,
    "Day/Boarding" text,
    "School Colors" text
) ### Response: SELECT COUNT("Founded") FROM table_24727 WHERE "Enrolment" = '850'