Teacher: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'.
Teacher: Now, understand the problem? Solve this instance: 2721 sottrazione 4740 sottrazione 5673 sottrazione 3604 sottrazione 5901 aggiunta 7998 aggiunta 1920 aggiunta 7745 aggiunta 3964
Student:
4430