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: 6420 @ 6956 @ 9478 # 4046

A: 18808
****
Q: 2931 @ 2088 @ 4090 # 4838 # 6154 # 8570 @ 8518 @ 1737

A: -198
****
Q: 6758 @ 9368 # 5978

A:
10148
****