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]: 486 # 3873 # 1187
[EX A]: -4574

[EX Q]: 7720 @ 5171 # 6139 @ 480
[EX A]: 7232

[EX Q]: 7918 @ 5997 # 5403 # 3756 @ 6192 # 4714 @ 1851 @ 846
[EX A]:
8931