instruction:
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.
question:
2514 - 3539 - 8491 + 7351 - 1448
answer:
8641


question:
6492 - 3901 + 3666 + 9196 - 3917 - 133
answer:
1581


question:
8356 + 9511 - 9409
answer:

8254