This is the 444th most frequent Russian word.
каждого
"Каждого" means "of each" or "of everyone" in English.
каждому is used to indicate 'each one' (dative form) referring to multiple individuals being individually recognized.
Я благодарен каждому за его помощь.
I am grateful to each one for their help.
каждого is in the genitive case to express 'of each' in the context of specifying an attribute of the participants.
Важно учитывать мнение каждого участника.
It is important to consider the opinion of each participant.
каждого (genitive case) is used to indicate 'for each one' in a possessive context, specifying something awaiting them.