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: 1559 # 9981 # 6881

SOLUTION: -15303

PROBLEM: 8997 @ 8611 # 604 @ 1810 # 1906 @ 5956

SOLUTION: 22864

PROBLEM: 9281 @ 3667 @ 8036 # 9647 # 8112 @ 4479 @ 2399 @ 2222 # 9687

SOLUTION:
2638