How to fix this matrix dimensions do not agree?

I tried changing / to./ stll it didn't work. Could anyone help me what is the problem in my file.

Thank you

[Adam Danz]

There are probably dozens of division operators in your code.

Reduce the amount of work we need to do to help you out. Show us the line of code that is causing the problems, explain why it didn't work (provide error messages if applicable), and describe the size and shape of variables. If you provide a minimal working example, you'll probably get an answer very quickly.