Calculator tab with calculator

I would like to have a tab added to my site that says "How much could I qualify for?" or "Get a Soft Estimate" with a calculator like the one I attached, but obviously it has to match my website. You can go to www.rapidfinance.com and scroll to the bottom to see this. I want it on a separate tab, as well as replacing the contact area on my home page. Here is the link to my website www.willowfundingsolutions.com