Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Russian три́дцать

→ Belarusian трыццаць (cognate)
→ Russian три (link)
→ Russian десяток (link)
→ Russian тридцатьчетвёрка (affix)
→ Russian тридцатилетний (affix)
→ Russian тридцатиугольник (affix)
→ Russian тридцатка (affix)
→ Russian тридцатилетие (affix)