Sen'en no ichi-waribiki wa kyūhyakuen desu yo. Kantan ni iu to sen no 10% hiki 10bun no 1biki to iu koto ne.One waribiki of a thousand yen is nine hundred yen. Put simply, it means 10% off a thousand [or] a one-tenth discount.

tomodachi o keisatsu ni uruto turn in a friend to the police

Henshū mo gyōmu mo chitcha na isshitsu ni gochamaze.The editing and business was done in one single very messy room.

Arakajime junbi o shite oku.Prepare for it beforehand.