וּבַיּ֧וֹם הַשְּׁבִיעִ֛י פָּרִ֥ים שִׁבְעָ֖ה אֵילִ֣ם שְׁנָ֑יִם כְּבָשִׂ֧ים בְּנֵי־שָׁנָ֛ה אַרְבָּעָ֥ה עָשָׂ֖ר תְּמִימִֽם׃
일곱째 날에는 수송아지 일곱과 수양 둘과 일 년 되고 흠 없는 수양 열넷을 드릴 것이며
Chizkuni
וביום השביעי פרים עשרה, “and on the seventh day, ten young bullocks.” The total number of young bullocks offered on the seven days of Sukkot was seventy. This corresponded to the fifty two Sabbath days in the year, seven days of Passover, one day of Shavuot, one day of New Year, one day of Atonement, and eight days of Sukkot/Sh’mini Atzeret. According to Rashi.