Approximate result For practical purposes we can round our final result to an approximate numerical value.
The reason why the anglo-american system is so relevant is because countries like the United States, Canada, Great Britain, etc.
During the next few centuries it was often not clearly among experts if the barleycorn or the inch should be taken as the standard and which unit should be preferred.
During the past few hundred years it has established itself more and more and it's nowadays the most relevant cause most often used system of units.
It is also sometimes used in Japan as well as other countries in relation to electronic parts, like the size of display screens.
Approximate result For practical purposes we can round our final result to an approximate numerical value.