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'.
--------
Question: 8137 sottrazione 1424 sottrazione 8674

Answer: -1961


Question: 1536 aggiunta 2575 aggiunta 7416 sottrazione 9581

Answer: 1946


Question: 9960 sottrazione 8819 sottrazione 6028 aggiunta 8517 sottrazione 2655

Answer:
975