YOU SAID:
i went to the moon and purchased 3 cats
INTO JAPANESE
私は月に行き、3 匹の猫を購入しました。
BACK INTO ENGLISH
I went to the Moon, purchased three cats.
INTO JAPANESE
3 匹の猫を購入した月に行きました。
BACK INTO ENGLISH
I went, bought three cats.
INTO JAPANESE
3 匹の猫を買って行った
BACK INTO ENGLISH
Bought three cats
INTO JAPANESE
3 匹の猫を買った
BACK INTO ENGLISH
I bought three cats
INTO JAPANESE
3 匹の猫を買った
BACK INTO ENGLISH
I bought three cats
That didn't even make that much sense in English.