YOU SAID:

I ate my grandma and then cremated her inside my stomach while doing 60 backflips and 56 cartwheels

INTO JAPANESE

私はおばあちゃんを食べて、60 回のバク転と 56 回の側転をしながら、お腹の中で火葬しました。

BACK INTO ENGLISH

I ate my grandma and cremated her in her stomach doing 60 backflips and 56 cartwheels.

INTO JAPANESE

私はおばあちゃんを食べて、バク転を 60 回、側転を 56 回して、お腹の中で火葬しました。

BACK INTO ENGLISH

I ate my grandma, did 60 backflips, 56 cartwheels, and cremated her in my belly.

INTO JAPANESE

私はおばあちゃんを食べ、バク転を 60 回、側転を 56 回行い、お腹の中で火葬しました。

BACK INTO ENGLISH

I ate my grandma, did 60 backflips, 56 cartwheels, and cremated her in my belly.