ホグワーツには一四二もの階段があった。
There were as many as 142 staircases at Hogwarts.
This is probably a daft question but I'd like to be sure. When you see a number written in kanji like 一四二 do you read it as ひゃくよんじゅうに or as separate numbers いち よん に? Does it make any difference if the text is written vertically?