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: 123 # 6452 # 5554 # 9261 @ 6646

SOLUTION: -14498

PROBLEM: 2548 @ 2442 # 6943 # 1890 @ 3686 @ 9765 # 1273

SOLUTION: 8335

PROBLEM: 352 @ 1462 @ 4915 @ 1754 # 5550 # 9320 # 7432 @ 5565 # 5716

SOLUTION:
-13970