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: 9807 @ 9345 # 5133 # 8042 @ 1499 # 8153 # 638

A: -1315
****
Q: 2020 @ 862 # 5780

A: -2898
****
Q: 3881 @ 3747 @ 6493 # 7538

A:
6583
****