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: 8780 # 5826 # 420 @ 8814 @ 5786 # 1725

SOLUTION: 15409

PROBLEM: 3935 # 7500 # 205 # 7262 # 5754 @ 116 # 8451 # 9591

SOLUTION: -34712

PROBLEM: 8269 @ 5884 @ 854 @ 5912 # 5727 # 3694 @ 711

SOLUTION:
12209