How to write $12 (N / m)^2$ in long form

Question

I want to write the value $12 (N/m)^2$ in long form like "12 Newtons per meter squared". However, I believe that because of the order of operations, my long form value will be interpreted as $12 N/(m^2)$.

How should I write this value in long form? Or am I best to avoid using the long form in a situation like this?

Answer 1

"Twelve Newtons-squared per metre-squared" is how I'd read it.