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

4397 # 8340 @ 6322 @ 4315 # 7894 # 4413 @ 6379 @ 6717 @ 2228
9711