I was wondering what the easiest way is to convert the running count to the true count. In the book I'm reading it says to divide the run count by every quarter deck when there's < 2 decks. Now this is easy enough when there's 2 decks, 1 deck or 0.5 decks, but when there's 0.25 or 0.75 decks I find it impossible. For example I couldn't do 12/1.75 in my head. So do I just need to draw up a huge table of all the possibilities and memorize them or master long division?