Well, 30 cm divided by 3 is 10 cm. 1 cm divided by 3 is 0.33 cm. If you have 8 inches and divide it by 3, you'll also have 2.66 inches. If you have a round 10 inches, it's still 3.33 inches.
And the conversion is 1:1000 or 1:10 for metric system (mm, cm, dm, m), and 1:12 for feet-to-inches, so sure, you can divide by 2, 3, 4, 6 and get whole numbers, and for 1:10 you can divide by 2,5 and get whole numbers. With 4 you get one decimal only (10/4 = 2.5).
There is also feet and yards, but if you go by feet, you won't have precision, only rough distances. Then dividing by 3 doesn't matter. And when it comes to anything that isn't some larger distance, like clothing related sizes, you'll have to use inches anyway.
Also inches are 1/12 feet, but both are (have to be) standardized anyway.
And how many inches do 187 feet have? Well, 187m have 1870dm. But for feet it's 187 * 12 = 1870 + 374 = 2244. And what about mm? Are there milli-inches? Or kilo-yards?
I don’t need to be used to my own body, though. *“If you already have a million dollars, it’s no trouble to lend out a few tens of thousands!”*
>the conversion rate of 1:1000 makes it very nice to use.
Until you need to divide something into equal thirds.
And the conversion is 1:1000 or 1:10 for metric system (mm, cm, dm, m), and 1:12 for feet-to-inches, so sure, you can divide by 2, 3, 4, 6 and get whole numbers, and for 1:10 you can divide by 2,5 and get whole numbers. With 4 you get one decimal only (10/4 = 2.5).
There is also feet and yards, but if you go by feet, you won't have precision, only rough distances. Then dividing by 3 doesn't matter. And when it comes to anything that isn't some larger distance, like clothing related sizes, you'll have to use inches anyway.
Also inches are 1/12 feet, but both are (have to be) standardized anyway.
And how many inches do 187 feet have? Well, 187m have 1870dm. But for feet it's 187 * 12 = 1870 + 374 = 2244. And what about mm? Are there milli-inches? Or kilo-yards?