How do you spell numarical numbers?

It seems like you're asking about how to spell out numerical numbers! It's "numerical", not "numarical".

To clarify, are you asking how to spell out numbers like "one", "two", "three", etc.? Or are you asking how to write numbers in a way that is clear and easy to read, especially when there are a lot of digits?

Please tell me what you meant, and I can give you a more specific answer!