Table schema:
CREATE TABLE table_name_53 (run_2 VARCHAR, run_4 VARCHAR, run_3 VARCHAR)

Question: How much Run 2 has a Run 4 of 57.68, and a Run 3 smaller than 57.9?
SQL: SELECT COUNT(run_2) FROM table_name_53 WHERE run_4 = 57.68 AND run_3 < 57.9