Запишите число 0,(123456789) в виде обыкновенной дроби

Whole-channel inclusion: Valery Volkov is an honest teaching channel (title sample + 3 transcripts read: All three samples lack transcripts, so the channel verdict relies on the prior title-sample assessment of consistent, non-clickbait math teaching content.); this title passed a strict title check (sonnet) after a labelling pass.

A 4-minute video from Valery Volkov: “Запишите число 0,(123456789) в виде обыкновенной дроби”.

Video by Valery Volkov, played through YouTube's embedded player.