Given the task definition and input, reply with output. 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

4809 # 9135 # 3011 # 4393 # 1039 # 3878 @ 1559 # 3798

-18886