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: 7252 # 8553 # 4853 @ 6748 # 3750

SOLUTION: -3156

PROBLEM: 8899 # 4509 # 9411 # 7373

SOLUTION: -12394

PROBLEM: 5605 @ 3064 @ 1869 @ 7736 @ 8545 @ 1291 # 4321 # 2229

SOLUTION:
21560