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.

5299 - 8791 + 6861
7229

7320 + 9337 - 31 + 8850 + 4804 + 230 - 9287 - 4572
-2011

891 + 1152 + 6230 + 9387 + 841 - 8048 - 2468

-6203