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: 8159 aggiunta 3127 sottrazione 4377 sottrazione 2245 aggiunta 8593 aggiunta 1513 aggiunta 1815
A: 
16585