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: 9909 - 1362 + 9804 + 5190 + 8223 - 3758

SOLUTION: -8188

PROBLEM: 8602 - 1293 - 8063 - 4529 + 453 - 6407

SOLUTION: 28441

PROBLEM: 3915 + 4904 + 4887 + 7162 - 3798 + 233 + 1101 - 7758 - 4627

SOLUTION:
1811