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:
4397 - 3478 - 9837 - 7164 + 7972 + 3676
answer:
13228


question:
5175 - 1386 - 5328 - 898 + 5361 - 376 + 1286 + 861
answer:
5655


question:
8556 - 1888 + 3898
answer:

6546