CREATE TABLE table_name_6 (inegi_code INT, municipal_seat VARCHAR, area__km2_ VARCHAR)

What is the inegi code for mexicali with 13,700 km area?
SELECT AVG(inegi_code) FROM table_name_6 WHERE municipal_seat = "mexicali" AND area__km2_ > 13 OFFSET 700
SELECT AVG("inegi_code") FROM "table_name_6" WHERE "area__km2_" > 13 AND "mexicali" = "municipal_seat" OFFSET 700