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

1162 @ 622 # 7209 @ 3448
-1977

6942 @ 1857 @ 1508 @ 3059 # 6727
6639

8770 # 4362 @ 8132 @ 1253 @ 6642 @ 8278 @ 2685 # 3013

28385