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: 4945 # 9916 # 656 @ 6515 # 5000 @ 6599 # 9652

SOLUTION: -7165

PROBLEM: 958 # 263 # 1097 @ 3868 # 3982

SOLUTION: -516

PROBLEM: 8135 @ 8670 @ 4936

SOLUTION:
21741