Write SQL query to solve given problem: In 1976, how many goals achieved by team 'BIR' in Division 'EW'?. Keep the solution inside sql tag ```sql [SQL-Query] ```
SELECT SUM(T2.G) FROM Teams AS T1 INNER JOIN Scoring AS T2 ON T1.tmID = T2.tmID AND T1.year = T2.year WHERE T1.divID = 'EW' AND T1.tmID = 'BIR' AND T1.year = 1976