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:
6894 + 3927 + 7884 - 4132 - 6563 + 4281
answer:
1497


question:
1278 + 4628 + 2357 + 3694 + 5775 + 8542 - 793
answer:
-22925


question:
7631 + 9873 + 9212 + 2671 - 4055
answer:

-10070