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:
8157 - 2717 - 1214 + 8558 + 7391 - 7163 + 6203 - 6912
answer:
4011


question:
1861 - 3929 + 4952 - 8280
answer:
9118


question:
5460 - 8572 + 5548
answer:

8484