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: 4981 aggiunta 8241 aggiunta 7857 sottrazione 5030 aggiunta 8950 sottrazione 1012
A: 
23987