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.
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Question: 509 + 4840 + 5618 + 9163 + 802

Answer: -19914


Question: 5630 - 3377 + 9205 - 4071 + 9580 - 7049

Answer: 1342


Question: 499 + 9434 - 2816 - 5964 + 4951 + 2117 + 690

Answer:
-7913