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

8137 @ 5006 # 7743 @ 1478
6878

6060 @ 2846 @ 4249 @ 6831 @ 5191 @ 3711 # 352 # 2921 @ 5640
31255

877 # 7761 # 7154 # 4993 # 2712

-21743