YOU SAID:

I ate twenty cats in a single day 😀

INTO JAPANESE

私は１日で２ ０匹の猫を食べた 😀

BACK INTO ENGLISH

I ate 20 cats a day. 😀

INTO JAPANESE

私は１日に２ ０匹の猫を食べた。 😀

BACK INTO ENGLISH

I ate twenty cats a day. 😀

INTO JAPANESE

私は１日に２ ０匹の猫を食べた。 😀

BACK INTO ENGLISH

I ate twenty cats a day. 😀