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:
1078 + 2128 + 513 + 5898 - 8020
answer:
559


question:
496 + 5072 + 6259 + 1493 + 4824 + 2052 + 4751 - 8038
answer:
-15917


question:
7847 + 4807 + 7427
answer:

-4387