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: 7757 # 4475 @ 6447 # 2209 # 9966

A: -2446
****
Q: 331 # 9967 @ 21 @ 480 # 3926 @ 8770 @ 5909 @ 6288 # 1226

A: 6680
****
Q: 3893 @ 1301 @ 8192 @ 1206 # 6036 @ 1515 # 5992 # 1236 @ 4580

A:
7423
****