No, because I’m only talking about unit notation, just like hyphenated words do not mean subtraction of the words. Why would Google follow unit notation rules f

No, because I’m only talking about unit notation, just like hyphenated words do not mean subtraction of the words. Why would Google follow unit notation rules for something that is completely irrelevant to unit notation? If we’re going to be maximally pedantic, you will notice that “Wh” is also wrong, and should instead be “W h” with a space. That’s what NIST says the standard is. Why are you writing it incorrectly? It’s almost as if different groups of people have different notational conventions. I already agreed it is nonstandard, but your notation is also questionable according to the standards for unit multiplication. It just happens to be a commonly accepted convention. Here is an example of Wolfram Alpha handling this dash unit notation: https://www.wolframalpha.com/input?i=%283W-h%29%2F%281h%29+in+watts https://www.wolframalpha.com/input?i=%283W-h%29%2F%281h%29+i... I guess someone should tell Wolfram Alpha they forgot to “subtract the units”, whatever that means.