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: 8769 @ 9595 # 7775 # 3412 # 7 @ 4689 # 4368

SOLUTION: 7491

PROBLEM: 8238 @ 9817 # 2474 @ 3673 @ 9625 # 849 @ 1441

SOLUTION: 29471

PROBLEM: 9657 # 7116 # 9971 # 9925

SOLUTION:
-17355