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: 2307 # 9363 @ 4926 @ 5635

Answer: 3505


Question: 4809 # 9135 # 3011 # 4393 # 1039 # 3878 @ 1559 # 3798

Answer: -18886


Question: 4899 # 3034 @ 3351 @ 7952 @ 4527 # 2700 # 3143 @ 3642 # 2445

Answer:
13049