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:
8294 + 6661 + 4555 + 6171
answer:
-9093


question:
6738 - 471 + 8724
answer:
-1515


question:
6210 + 5731 - 8224 - 3381 + 3645
answer:

8439