How to show the unit price based on weight per article

How to show the unit price based on weight per article

Hello! 

In our Zoho Commerce online shop, we sell various different package sizes (20 kg, 30 kg, 5 kg). For more customer transparency, I'd like to display the unit price for each product, broken down to the 1 kg price, in addition to the total price per article. 

For example: Article 1 = 55 € for 20 kg = 2.75 € per kg.

I cannot find the setting or function for this - either in Commerce or Inventory.

Could you assist me in setting up the unit price display?