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: 8938 @ 421 # 7192 # 6922 # 3139 @ 1371 @ 5640 # 8202
A: 
-9085