How many matches of the Bundesliga division ended with an away victory in the 2021 season?
Bundesliga is the name of division; away victory refers to FTR = 'A', where 'A' stands for away victory;
SELECT COUNT(T1.Div) FROM matchs AS T1 INNER JOIN divisions AS T2 ON T1.Div = T2.division WHERE T2.name = 'Bundesliga' AND T1.FTR = 'A' AND T1.season = 2021