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: 8717 @ 6135 # 2706

SOLUTION: 12146

PROBLEM: 5860 @ 3039 # 7874 # 3584 # 144

SOLUTION: -2703

PROBLEM: 957 @ 6022 # 7376 @ 5580 # 6021 @ 2380 @ 5467

SOLUTION:
7009