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: 5968 # 833 # 9263 @ 5675 @ 3262 # 2158

SOLUTION: 2651

PROBLEM: 7784 @ 2158 # 756 @ 4284 @ 7932

SOLUTION:
21402