instruction:
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:
6904 # 1007 @ 9690 @ 9967 @ 9620 @ 4765
answer:
39939


question:
9781 # 2797 # 2134
answer:
4850


question:
5007 @ 783 @ 3817 @ 5984 @ 7937 # 1888 @ 381 # 2641 @ 907
answer:

20287