YOU SAID:
Mark mistakenly ordered me nine pizzas
INTO JAPANESE
マークは誤って私に9ピザを注文しました
BACK INTO ENGLISH
Mark accidentally ordered me 9 pizzas
INTO JAPANESE
マークは誤って私に9ピザを注文しました
BACK INTO ENGLISH
Mark accidentally ordered me 9 pizzas
You've done this before, haven't you.