Question: What was the attendance at the Billericay Town home game?
SQL: SELECT "Attendance" FROM "2-18032720-9" WHERE "Home team" = 'Billericay Town';

Question: What was the tie number of the away game for Ashford Town (Middx)?
SQL: SELECT "Tie no" FROM "2-18032720-9" WHERE "Away team" = 'Ashford Town (Middx)';

Question: Who was the away team at the game attended by 81?
SQL: SELECT "Away team" FROM "2-18032720-9" WHERE "Attendance" = '81';