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: 486 # 3873 # 1187

SOLUTION: -4574

PROBLEM: 7539 # 9710 # 800 # 5609

SOLUTION: -8580

PROBLEM: 9864 @ 4357 @ 3225 # 7816

SOLUTION:
9630