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: 6267 @ 3545 @ 4904 @ 4580

SOLUTION: 19296

PROBLEM: 7065 # 7713 # 7473 # 664 # 8030

SOLUTION: -16815

PROBLEM: 8243 @ 5509 # 2652 # 916 # 1636 @ 9824

SOLUTION:
18372