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
--------
Question: 605 @ 9301 @ 640 # 9148 # 8015

Answer: -6617


Question: 8422 @ 5670 # 5825 @ 3613

Answer: 11880


Question: 462 # 2972 # 2044 # 648 @ 829

Answer:
-4373