Online Calculator with Zoho Forms?

I'd like to build a custom calculator on my website. Zoho Forms seems to offer all the fields for basic calculations performed live without pressing any "Calculate" buttons.

Unfortunately, there is still that "Submit" button at the bottom. There is nothing to submit with such live calculation. Is there any setting to exclude the button? Or do I have to look into CSS?

Also, although I love the form elsewhere on my website, the fields feel too large for a calculator. And, they all go in one column, which will be a slight issue with a long list of entries. I'd prefer them in two columns to make the tool more compact.

I doubt these things are doable with Zoho Forms, so I wonder if there is another Zoho tool that works better with such a live calculator. Thank you!