What is the average rank of the airport in S o Paulo with passengers totaling less than 18,795,596?
CREATE TABLE table_41630 (
    "Rank" real,
    "Location" text,
    "Total Passengers" real,
    "Annual change" text,
    "Capacity in use" text
)
SELECT AVG("Rank") FROM table_41630 WHERE "Location" = 'são paulo' AND "Total Passengers" < '18,795,596'
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 rank of the airport in S o Paulo with passengers totaling less than 18,795,596? ### Input: CREATE TABLE table_41630 (
    "Rank" real,
    "Location" text,
    "Total Passengers" real,
    "Annual change" text,
    "Capacity in use" text
) ### Response: SELECT AVG("Rank") FROM table_41630 WHERE "Location" = 'são paulo' AND "Total Passengers" < '18,795,596'