A classroom has a whiteboard which is shared between the 9642627 teachers who take turns using the classroom. Each teacher has 2 lessons per day and uses the whiteboard in each lesson. If the white…👇

A classroom has a whiteboard which is shared between the 9642627 teachers who take turns using the classroom. Each teacher has 2 lessons per day and uses the whiteboard in each lesson. If the whiteboard is cleaned 3 times per lesson, how many times is the whiteboard cleaned in a day?