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

2497 # 4988 @ 8200 # 3896 @ 5601 @ 1004
8418

2307 # 9363 @ 4926 @ 5635
3505

2514 @ 4466 @ 9929 # 8432 @ 5142 @ 7480 @ 4250 # 4017

21332