Hi @skyhighweb I found a couple of things that might be getting in your way but I’m not able to test them right now so take them as suggestions rather than definite fixes.
Try moving the script tag after and outside of the div.
If that doesn’t work try using innerHTML instead of textContent property.
div elements don’t have a value property, and they will never get submitted with a form – use an input element instead. Also note that {MIN_BIDS} isn’t a valid JS identifier; if you want to obtain that value from an HTML element, you might store it as a data-* attribute, and access it like e.g.
HTML
<div id="win" data-min-bids="42"></div>
JS
var win = document.getElementById('win')
var minBids = win.dataset.minBids
var x = minBids * 1.95
win.textContent = x