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: 1262 # 4309 # 2911

A: -5958
****
Q: 9487 # 9520 @ 4047

A: 4014
****
Q: 6361 @ 4767 # 8794 @ 3736 @ 7787 # 6746 # 9019

A:
-1908
****