A group of squirrels are lining up to buy acorns.  Squirrel Ryan says that, "There are $$5$$ squirrels in front of me. "  Squirrel Elvis says that, "There are $$7$$ squirrels behind me. "  Squirrel Ryan is in front of Squirrel Elvis, and there is only $$1$$ squirrel between them. How many squirrels are buying acorns? 
Overseas Competition->Knowledge Point->Counting Modules->Law of Addition and Multiplication->Queuing Problems