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

7640 @ 3347 @ 904
11891

2416 @ 4557 @ 9089 @ 8858
24920

6449 # 1226 # 7515 # 5712 # 9188 # 7872

-25064