Today, no time for full Russian lesson, so going to teach myself some numbers. 1, 2, 3 I already know but I often stumble already at ”4”

4 - четыре - neljä 5 - пять - viisi 6 - шесть - kuusi

For more check this nice online resource with audio and English pronunciation instructions for numbers

All these numbers feature a soft t ть. This distinction between hard and soft consonants don’t exist in other languages I know, so here is an Youtube video that explains that distinction very well