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: 8157 # 6333 @ 7928

SOLUTION: 9752

PROBLEM: 8899 # 4509 # 9411 # 7373

SOLUTION: -12394

PROBLEM: 1275 # 4835 @ 1715 # 9047 # 434 # 97

SOLUTION:
-11423