It's up to the localizer to define variants corresponding to the language's plural categories. For Russian, that's (one, few, many). Interestingly, this particu

It's up to the localizer to define variants corresponding to the language's plural categories. For Russian, that's (one, few, many). Interestingly, this particular example could simplified to (few, *), because "раз" is good for both 1, 5, 11, 55, etc. See https://projectfluent.org/play/?id=7d22f87c04b23b86d9f9149d5d1090fc https://projectfluent.org/play/?id=7d22f87c04b23b86d9f9149d5... for an example of this in action. Authoring tools can help here, too. Pontoon, Mozilla's translation management system, pre-populates plural variants based on the number of plural categories defined in Unicode's CLDR.