Q: 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
6720 # 4223 @ 5399 # 9312 # 3020 # 436 @ 6399 # 2509
A:
-982