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: 8816 # 8770 # 5004

SOLUTION: -4958

PROBLEM: 4787 # 6151 # 6235

SOLUTION: -7599

PROBLEM: 3217 # 1465 @ 7919 @ 6882 # 1421

SOLUTION:
15132

