Step 1. Right click on any cell in your spreadsheet, and in context menu find "Insert Snippet"
Step 2. From that menu choose any formula - ProdIndexHorWellJoshi for example, by clicking on it.
What you get is the small snippet inserted in spreadsheet, with formula and parameters description.
Note that the last row has formula linked to other cells.
Step 3. Insert values in parameter cells and that's it. With just a couple of clicks you have some answers.