When I added multiple calculation fields to a form, sometimes one of them didn't work.

For example, I tried to add 5 fields - Total cost, group size, # of adults, # of children, and type of product.

So they choose the product (which sets the base price), then they choose the # of adults / children, and then the total group size / total cost should be set (both calculated forms).

But I only got this to work if I simplified the form, and just made the total calculation a more complicated formula. I tried using sub-total instead of another calculation field since I thought there was a conflict and I could only use one calculation field.

Is it possible to use more than one calculation field?