Retail, hm? My condolences.
I hope my post is alright. Precision is something Jin is going to be very, very good at, even if she may not be able to explain completely at this age. Basically, it's all numbers to her, and she's very good with numbers. It will hopefully make sense in the next few posts.
It's weird. I'm terrible at numbers, distances, directions... trying to write someone who understands those things as easy as breathing. It's kind of hard sometimes, actually.