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

Q: 2020 @ 862 # 5780

A: -2898
****
Q: 9110 # 7535 @ 8117 # 9919 @ 6813 @ 187 # 5187

A: 1586
****
Q: 2540 # 5677 @ 9926

A:
6789
****