CREATE TABLE table_41630 ("Rank" FLOAT, "Location" CLOB, "Total Passengers" FLOAT, "Annual change" CLOB, "Capacity in use" CLOB)

What is the average rank of the airport in S o Paulo with passengers totaling less than 18,795,596?
SELECT AVG("Rank") FROM table_41630 WHERE "Location" = 'são paulo' AND "Total Passengers" < '18,795,596'
SELECT AVG("Rank") FROM "table_41630" WHERE "Location" = 'são paulo' AND "Total Passengers" < '18,795,596'