Where I come from, if we have a question that we can't find an answer to, we go to the Goddess of Mercy temple and cast divination sticks. But it is sometimes difficult if you do not concentrate on the question, the stick that is presented will always be rejected when you cast the oracle stones (two red crescent shape pcs) for a yes or no if this is the correct answer to the question.
Like this morning, when I asked a question, I was rejected twice before the correct answer was revealed. It is a short cut to the casting of coins in I-ching.
If MB can come up with this software, it will be great.

I use the 16 stick method to cast the hexagram.  This works quite well for me.  It does have a mathematical significance; however, the reason why I like using the 16 stick method is because it feels right to me.  I build the hexagram from the bottom up and I return each stick I draw immmediately to the bag of sticks so that I will always have 16 sticks to draw frrom, for each line.

                                           yang sticks(unmarked) = 5
                  changing yang sticks(marked red end)    = 3
           yin sticks (marked with a black bar near end) = 7
changing yin stick (marked with black bar  & red end) = 1
                                                         ----------------------
                                                           Total Sticks = 16

Short Cut!

Some argue if you don't have the time or patience to do it right don't.

The I Ching will give only what you put into it.

i have 49 yarrow stalks, how should i use them

Need 50

Take one out set it aside so you have 49 (Yes, seriously)

Spilt into two even piles.

Take the right pile, take one stick out and place it between the pinky and ring finger of the left hand.

Then begin counting out set of four until you are left with 1,2,3 or 4 sticks

And put that between the ring and middle finger of left hand.

Now take the left pile and begin counting in fours until you are left with 1,2,3 or 4 sticks.

This is your first line 5 is new Yang, 9 is old Yang, 4 is new Yin 8 is old Yin

Put the sticks in your hands aside and mix the remaining sticks and start again.

I know I am missing something