Imagine a scenario in which a hotel has rooms, each capable of accommodating Y guests. When X number of guests arrive at the hotel, we need to determine the minimum number of rooms required to house all X individuals without exceeding the room capacity.

This can be calculated using the function CEILING(X, Y), which rounds up the result of dividing the total number of guests by the room capacity. It ensures that no guest is left without accommodation, even if the division does not yield a whole number.

Example: If there are 5 guests (X = 5) and each room can accommodate 2 people (Y = 2), then:

CEILING(5, 2) = 3

Therefore, a minimum of 3 rooms would be needed to accommodate all 5 guests.

For example, the same goes with memory instead of the hotel, each block has a maximum Y bytes that can be accommodated, and the CEILING will give you the answer to how many blocks at least you need to accommodate X bytes.