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
Q: 7671 # 7716 @ 5899 @ 2520 # 497 # 24 # 16 # 840 # 9556
A: 
-2559