TASK DEFINITION: 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.
PROBLEM: 6789 - 6255 + 3477 - 8628 + 3410 + 5875 + 7308 + 2357

SOLUTION: -755

PROBLEM: 1510 + 8779 + 5742 - 9951 - 2155

SOLUTION: -905

PROBLEM: 7621 - 6427 + 6713

SOLUTION:
7335