How to show subtotal in catalog item while ordering a item in Service Portal

[deepika adimu]

Hi all,

Help me to show the subtotal in portal page while ordering the catalog item 

in above screen shot,  below price i need to show subtotal,

I try with the below community post still no luck

https://www.servicenow.com/community/developer-forum/total-on-service-catalog-checkout-page/m-p/1680....