VM3 custom field decimals and units

[eldat]

Hello,

can anyone tell me how to get rid of 4 decimal places in weight data shown in custom field?
Also I would like to show units (grams or kgs after number).
current status: https://goldenpacificcafe.com/index.php/e-shop/dorty/zviratka/jezecek-detail
It is the dropdown below Hmotnost (cena), which means Weight (price).

Joomla! 3.4.5, VirtueMart 3.0.12

Many thanks.

[GJC Web Design]

php number_format

css  ::after

[eldat]

Please tell me which is the right file to edit.

Thank you.

[GJC Web Design]

where ever your displaying it..