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.

138 + 3973 - 6085 - 3324 + 6921 + 4411 + 1113 + 8310
-15181

9549 - 507 + 659 + 3404 - 9243
15236

5422 + 5900 - 6117 + 7359 - 5045

3325