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

2421 # 8735 @ 7270 @ 741 # 5249 @ 1763 # 646 @ 4175
1740