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: 1709 # 2270 # 1077 # 9681

A: -11319
****
Q: 8842 @ 3530 @ 7537

A: 19909
****
Q: 2998 @ 2625 @ 881 @ 5969 # 8220

A:
4253
****