In this task you will be given an arithmetic operation in Italian and you have to find its answer. The operations 'addition' and 'subtraction' have been replaced with their italian translations i.e you need to perform addition when you see 'aggiunta' and subtraction in case of 'sottrazione'.
Q: 7507 aggiunta 7482 aggiunta 6454 sottrazione 69 sottrazione 9239 aggiunta 5387
A: 
17522