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: 427 # 7974 # 7564 @ 2404 # 4955 # 1239 # 1518 @ 906

SOLUTION: -19513

PROBLEM: 3876 @ 6607 # 1034 # 2483 @ 544 # 1053 @ 4907 @ 1303 @ 3904

SOLUTION: 16571

PROBLEM: 1857 @ 3094 @ 1822 @ 5310 # 7256 # 9253 @ 9815

SOLUTION:
5389