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: 4787 # 6151 # 6235

Answer: -7599


Question: 6543 @ 9353 @ 2169 # 4681 @ 6446

Answer: 19830


Question: 6265 @ 6346 @ 5512 # 1965 @ 5300

Answer:
21458