Powershell html string get value

I have a decoded html tag value is a string variable like this 

$Body = [System.Web.HttpUtility]::HtmlDecode($field.GetAttribute("Value"))

Output of the Body is like this 

<div class="1A00360973">6930-20-000</div>

the class value is dynamic. How can i get the div value using powershell ?.

thank you.