If you try to divide the 215 laptops equally amongst the four schools, then you must divide 215 by 4.
The trouble with this, however, is it will result in a remainder. 215+4= 53.75. So in other words, 215
laptops divided by 4 is 53 laptops for each school with 3 remaining to give out. But there are 4 schools!
What do you think is the fairest way to give out the 3 remaining laptops? Who gets left out and why?