After meeting Mr. Hashimoto's girlfriend at a high-class teahouse 'Hanabasha' (literally meaning, a carriage filled with flowers), they ordered coffee, 99 yen for each cup, by splitting the cost.
高級喫茶店「花馬車」で橋本の彼女と合流し皆で、お金を出し合い一杯99円のコーヒーを飲んだ。