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: 5137 @ 4207 @ 1156

SOLUTION: 10500

PROBLEM: 6844 @ 1340 # 4174 # 5664 @ 4911 # 5241

SOLUTION: -1984

PROBLEM: 3425 # 2961 @ 7399 @ 7956 # 5558 # 1812 # 5561

SOLUTION:
2888