How to set product units and display the quantity field on the category page?

Question

Electronic commerce

I am making an online store on woocomerce, the theme is storefront: chainayanomer1.ru

It is necessary to set up different units of measurement for weighted and regular goods, and also display the quantity field on the category page.

An example of what needs to be done:




Taken from here: https://101tea.ru/

You also need to automatically update the price when changing the quantity field.
It is necessary to leave the value in pieces for ordinary goods, and set different values ​​for weighted goods, for some it is 25g. for other 100 and so on, respectively, when you click on "+" and "-" the value in the field should change in multiples of the original.

Can you please tell me how this can be done?