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

6472 # 6421 @ 7649 @ 4005
11705

9746 # 6804 @ 5800 @ 8118 @ 2515 @ 1083 # 8754
11704

6551 # 9950 # 5170 # 479 # 5304 # 3855 # 2560 @ 429 @ 4472

-15866