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

6942 @ 1857 @ 1508 @ 3059 # 6727
6639

8932 # 2337 @ 825 # 8463 @ 528
-515

7724 # 7887 # 2059 # 78 @ 6356 # 6027 @ 8376

6405