וַֽיְחִי־יֶ֗רֶד אַֽחֲרֵי֙ הוֹלִיד֣וֹ אֶת־חֲנ֔וֹךְ שְׁמֹנֶ֥ה מֵא֖וֹת שָׁנָ֑ה וַיּ֥וֹלֶד בָּנִ֖ים וּבָנֽוֹת׃
And Jared lived after he begot Enoch eight hundred years, and begot sons and daughters.
Read kabbalistic (mystical) interpretation of Genesis 5:19: and classical mystical sources.