Instructions: 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
Input: 6432 @ 6640 # 5154 # 8162 @ 1655 # 9693 @ 6146 # 3792 # 642
Output:
-6570