sega1821,
<!DOCTYPE html>
<html>
<head>
<title>Untitled</title>
<meta charset="utf-8">
<style type="text/css">
</style>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
<script>
$(function() {
$( ".datePlus" ).each(function() {
var num = Number(this.innerHTML);
num *= 1.05;
num /= 1000;
num = Math.round(num);
num *= 1000;
num = num.toString().replace(/(?=\B(?:\d{3})+(?!\d))/g, ' ');
this.innerHTML = num
});
});
</script>
</head>
<body>
<p class="pColor">
<span class="datePlus">25000</span>
</p>
<p class="pColor">
<span class="datePlus">30000</span>
</p>
</body>
</html>