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: 2113 # 9012 @ 5533 @ 5034 # 9159 # 2169 # 9889

SOLUTION: -17549

PROBLEM: 8524 # 5976 # 1534 @ 266 # 6452 @ 3945 # 2305

SOLUTION: -3532

PROBLEM: 8403 @ 1868 @ 5827 @ 5471 # 3746 @ 1027 # 5777

SOLUTION:
13073