You're welcome. It's easy to get confused when you do something for the first time and knitting is no exception. I do it even when it's not the first time. Sometimes the only way to understand how things work out is to actually do it step by step and see it take shape and become the finished item. The seaming isn't a big deal, once you get there, so don't worry about it.
I should never overestimate my basic arithmetic skills.