YOU SAID:

I have 52 dogs and each dog has 10 pups how many pups in all

INTO JAPANESE

私は52匹の犬を飼っていて、各犬は10匹の子犬を持っています。

BACK INTO ENGLISH

I have 52 dogs, and each dog has 10 puppies.

INTO JAPANESE

私は52匹の犬を飼っていて、各犬には10匹の子犬がいます。

BACK INTO ENGLISH

I have 52 dogs, and each dog has 10 puppies.