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

2367 @ 4877 @ 8467 @ 5488 # 987 # 8899
11313

1516 # 4681 # 225 # 3393 @ 1212 @ 367
-5204

4679 @ 8221 @ 617 @ 1518

15035