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: 2989 # 6833 # 4298 @ 8863 # 8408

A: -7687
****
Q: 3128 # 9010 # 7595 @ 7963 @ 8405

A:
2891
****