CREATE TABLE table_7127 ("Track" FLOAT, "Recorded" CLOB, "Catalogue" CLOB, "Release date" CLOB, "Chart peak" CLOB, "Song title" CLOB, "Writer ( s ) " CLOB, "Time" CLOB)

Which Track has a Writer(s) of mac davis?
SELECT AVG("Track") FROM table_7127 WHERE "Writer(s)" = 'mac davis'
SELECT AVG("Track") FROM "table_7127" WHERE "Writer(s)" = 'mac davis'