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: 4839 # 9558 @ 1236 # 8758 # 3209

SOLUTION: -15450

PROBLEM: 7944 # 4957 # 8255 @ 684

SOLUTION: -4584

PROBLEM: 400 # 7518 # 3370 @ 5846

SOLUTION:
-4642