Dumb math question

[KJL]

No, I cannot do this calculation in my head. I am not really sure how to come up with this during a game, besides maybe making it 12/72 24/72 and 36/72 or 1/6 1/3 and 1/2. This would make it easier to calculate.
My thought process? I am not exactly sure what you mean. I added up all the combinations to get the 69 and put the combinations over 69 and mutiplied by the approxiamte percantage of winning each group of hands has.