Toire no tsunagi otoko (escape game)

[Spencer Cat]

You went to a public restroom and a man in a jumpsuit approached you. He asked, "don't you want to escape?". There is a rumor that people have been attacked by a man in a jumpsuite in this restroom. You quickly went to one of the stalls and locked the door. Now you need to safely escape from there.

Good luck!

http://zerosiki-kai.com/flash/toilet/index.html

[Yvonne]

Okay, found one item and a math? clue. Not good at math so I will try again later hoping that someone post a hint I can use.

[Blitzen]

??

I brute forced the answer to the math problem. Then I clicked the main door. Then it said game over. I guess you have to speak japanese or chinese or whatever language this is in to play....