How many Scottish League One games took place on the day that "Pro Vercelli" and "Pescara"had a 5-2 game?
Pro Vercelli and Pescara are names of teams; HomeTeam = 'Pro Vercelli'; AwayTeam = 'Pescara'; 5-2 is a score where FTHG = '5' and FTAG = '2'; Scottish League One is a name of division; games refer to Div;
SELECT COUNT(T1.Date) FROM matchs AS T1 INNER JOIN divisions AS T2 ON T1.Div = T2.division WHERE T2.name = 'Scottish League One' AND T1.Date = ( SELECT Date FROM matchs WHERE FTHG = 5 AND FTAG = 2 AND HomeTeam = 'Pro Vercelli' AND AwayTeam = 'Pescara' )