Executing exact money in shuk

I'm pleased to report that I can process verbal numbers well enough to either give the exact amount or know that what I'm giving is as close as I can do with the change in my pocket.  Yeah!  So now, I really know how much my produce costs.  The last couple of trips I did the cowardly thing of just making sure I gave the vendors more than it could cost.  Actually, that lengthy wait in the post office did a lot of my listening comprehension, because I was listening for my queue number.