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

7720 @ 5171 # 6139 @ 480
7232

4326 # 2636 @ 9431 # 1021 # 6603 # 2905 # 80 # 7174 # 3558
-10220

7650 @ 6374 @ 6155 # 4055 # 1005 # 7163 @ 7912

15868