YOU SAID:
Hello what are you doing on Saturday there’s gonna be a mad party at their grandmas house
INTO JAPANESE
こんにちは、あなたは土曜日に何をしているのですか、彼らのおばあちゃんの家で狂ったパーティーをするつもりです
BACK INTO ENGLISH
Hello, what are you doing on Saturday, are you going to have a crazy party at their grandma's house
INTO JAPANESE
こんにちは、あなたは土曜日に何をしていますか、あなたは彼らのおばあちゃんの家でクレイジーなパーティーをするつもりですか?
BACK INTO ENGLISH
Hello, what are you doing on Saturday and are you going to have a crazy party at their grandma's house?
INTO JAPANESE
こんにちは、あなたは土曜日に何をしていて、あなたは彼らのおばあちゃんの家でクレイジーなパーティーをするつもりですか?
BACK INTO ENGLISH
Hello, what are you doing on Saturday and are you going to have a crazy party at their grandma's house?
That didn't even make that much sense in English.