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: 2371 aggiunta 866 aggiunta 89 sottrazione 3924 sottrazione 2597 aggiunta 8334
A: 
5139