TASK DEFINITION: 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'.
PROBLEM: 9715 sottrazione 9911 sottrazione 824

SOLUTION: -1020

PROBLEM: 157 sottrazione 9421 aggiunta 4925

SOLUTION: -4339

PROBLEM: 3817 aggiunta 1723 aggiunta 7614 sottrazione 5530 sottrazione 2215

SOLUTION:
5409