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

[EX Q]: 9720 @ 6485 @ 1745 @ 728
[EX A]: 18678

[EX Q]: 8571 # 5985 @ 8912
[EX A]: 11498

[EX Q]: 462 # 2972 # 2044 # 648 @ 829
[EX A]:
-4373

