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

2307 # 9363 @ 4926 @ 5635
3505

2653 @ 9718 # 3237 @ 2973 # 6895 # 18
5194

1145 # 9371 # 1048 # 2600 # 5206

-17080