An organization wants to take a trip. We need enough busses to fit everyone. (We can't tell a few people that they can't go.)
If we divide 30/25 we will get just one. However, 30.0/25 gives us 1.2
Notice that the Ceiling function will give us the correct number of busses the ceiling of 1.2 is 2.
The text that appears will be "You will need 2 busses"