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: 1566 @ 1639 # 814 # 5278 @ 1717 # 4304 # 6735 @ 1407

Answer: -10802


Question: 2996 @ 6178 @ 7214 # 172 # 3711

Answer: 12505


Question: 7789 # 9560 @ 8572

Answer:
6801