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

8769 @ 9595 # 7775 # 3412 # 7 @ 4689 # 4368
7491

6420 @ 6956 @ 9478 # 4046
18808

489 # 4064 # 5922 @ 2376

-7121