HELP: Need a jump start equation back solver

[rmsmith1126]

I'm coming from an HP-50g and HP-42s mentality, and I just got my son an HP Prime G2 for school in the Fall.

HP used to have the best technical writers for their manuals especially the Advanced User Guide. The latest docs are awful; the examples are even worse IMHO.

I have a sample equation:
'q = 0.65 * SQRT( 64.348 * ( h - 0.5 * o )) * o * w * n'

The variables used to be presented as softkeys:
[q] [h] [o] [w] [n]

I need someone to jump start me with working PPL code using the above equation with the variables in the Form format (or soft keys) with back solve capability like the TVM in the Finance app.

Thanks in advance!