TASK DEFINITION: In this task you will be given an arithmetic operation and you have to find its answer. The operators '+' and '-' have been replaced with new symbols. Specifically, '+' has been replaced with the symbol '@' and '-' with the symbol '#'. You need to perform the operations in the given equation return the answer
PROBLEM: 7775 # 9805 # 8727

SOLUTION: -10757

PROBLEM: 4428 # 2569 @ 338 # 967 @ 2206

SOLUTION: 3436

PROBLEM: 2170 @ 5424 # 8564 # 8991

SOLUTION:
-9961