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: 8771 @ 2575 # 7914 # 3691

SOLUTION: -259

PROBLEM: 6506 # 8715 @ 5800 @ 1904 @ 3642

SOLUTION: 9137

PROBLEM: 6396 @ 7569 # 337 # 5302 @ 8456 @ 4916 # 8707

SOLUTION:
12991