Question: Automating matrix calculations

I've used the "unapply" command to calculate the several separarte transformation matrices (working a classical lamination theory problem in mechanics of composite laminates).  I'm now having a problem using these values to perform further calculations.  I've uploaded my file.  Basically, I;ve got to calculate some matrices and use those to calcuate other matrices.  Would anyone mind taking a look at it and letting me know if you have any suggestions for automating calculations?  I want to avoid copying and pasting each time (I'll be able to use this program on exams, and every bit of automation saves much time!).   


Thanks for any help!

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