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: 7427 + 8795 - 4104 + 7720 - 6667

SOLUTION: 1683

PROBLEM: 556 + 5223 - 5888 + 4866

SOLUTION: -3645

PROBLEM: 5299 - 8791 + 6861

SOLUTION:
7229