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: 353 # 9525 @ 9923 @ 4025 # 1922 @ 4751

SOLUTION: 7605

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

SOLUTION: -19513

PROBLEM: 1253 # 6603 @ 4676 # 4164 @ 8713 @ 5758 @ 8365 # 1303 # 3539

SOLUTION:
13156