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: 1864 @ 5416 @ 9408 @ 9513

A: 26201
****
Q: 2182 @ 8380 # 337

A: 10225
****
Q: 687 # 5177 @ 6370 # 7574 # 892 @ 2499

A:
-4087
****