The answer for 500/1000nths is: 0.500, or 0.5, or 1/2.
IT IS NOT 0.5, 5 Hundred-thousandths EQUALS 5/100000 NOT 500/1000
This is the equivalent of 1/2 (500 hundred is equivalent of one half of one thousand). You can write as 500/1000 or in decimal, .500, or if you want to say half is a portion of one whole, you might also reduce to .5 in decimal format. Were you looking to express in decimal format?