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: 84 - 4898 - 2883 + 5111 - 7812 - 5830 + 3330 + 8500 + 6754

SOLUTION: -2188

PROBLEM: 5450 - 7077 + 4877

SOLUTION: 7650

PROBLEM: 3906 - 507 + 647 + 3241 - 6854

SOLUTION:
7379