This is the 850th most frequent Finnish word.
kaikkiaan
"Kaikkiaan" means "in total" or "altogether."
In this sentence, 'kaikkiaan' is used to indicate the total sum or entirety of the participants of the event.
Tilaisuuteen osallistui kaikkiaan viisikymmentä ihmistä.
Altogether, fifty people attended the event.
Here, 'kaikkiaan' emphasizes the total duration of the project.
Projekti kesti kaikkiaan kolme vuotta.
The project lasted a total of three years.
In this example, 'kaikkiaan' is used as a starting evaluative phrase summarizing the overall impression of the experience.