Teacher:In this task you will be given an arithmetic operation and you have to find its answer. The symbols of operators '+' and '-' has been swapped i.e you need to perform subtraction when you see a '+' symbol and  addition in case of '-' symbol.
Teacher: Now, understand the problem? Solve this instance: 7360 + 3348 - 6633 - 1657 - 7156 + 9780
Student:
9678