Imagine trying to space objects 2 feet 7½ inches long against a wall that is 13 feet 2 inches long. Now imagine this task with 80 centimeter long objects and a ~400 centimeter wall.
You've made an artificially hard example (Ikea doesn't separate units, it is just inches).
What's harder, a 24" object on a 160" wall, or a 59cm object on a 4m 3cm wall?
Or to compare like for like (rounding & unified units), a 24" object on a 160" wall vs a 60cm object on a 400cm wall? Seems the same.
You've made an artificially hard example (Ikea doesn't separate units, it is just inches).
What's harder, a 24" object on a 160" wall, or a 59cm object on a 4m 3cm wall?
Or to compare like for like (rounding & unified units), a 24" object on a 160" wall vs a 60cm object on a 400cm wall? Seems the same.