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: 8899 # 4509 # 9411 # 7373

SOLUTION: -12394

PROBLEM: 6467 # 8145 # 9388 # 9232

SOLUTION: -20298

PROBLEM: 6984 # 2335 # 328 # 3933

SOLUTION:
388