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: 8513 - 7119 - 47

SOLUTION: 15679

PROBLEM: 8213 - 7166 - 3524 + 2770 + 767 - 3629 - 7894

SOLUTION: 26889

PROBLEM: 83 - 7843 - 2428 + 2619 + 1836

SOLUTION:
5899