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: 6557 @ 9368 # 307 @ 2982 # 8398 # 9241 # 4697 # 6790

SOLUTION: -10526

PROBLEM: 8771 @ 2575 # 7914 # 3691

SOLUTION: -259

PROBLEM: 6472 # 6421 @ 7649 @ 4005

SOLUTION:
11705