This is the 413th most frequent Finnish word.
kertoa
"To tell" or "to multiply."
In this sentence, 'kertoa' is used in the sense of narrating or recounting something to another person.
Hän kertoi minulle tarinan.
He told me a story.
Here, 'kertoa' means to explain or describe the functioning of something.
Voisitko kertoa, miten tämä toimii?
Could you explain how this works?
In this usage, 'kertoa' functions to convey information or inform others about something.