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.

6492 - 3901 + 3666 + 9196 - 3917 - 133
1581

2144 - 4158 + 4207
2095

8059 - 9510 - 4688 + 1517

20740