instruction:
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
question:
5137 @ 4207 @ 1156
answer:
10500


question:
2020 @ 862 # 5780
answer:
-2898


question:
7903 @ 4540 # 8329 # 3078
answer:

1036