Okay, the weird thing is that {wej loch cha’} is grammatically, a complete sentence. So, “2/3” is a complete sentence.

wejpuH.

So, how do you USE this complete sentence within another complete sentence?

Dujmeymaj wej lochbogh cha’ Qaw’ta’ jagh?

Dujmeymaj’e’ Qaw'bogh jagh toghmeH wej loch cha’?

I don’t see how to use it grammatically like a number, or an adjective to apply it to a noun, which is generally what we want to apply it to.

I get the feeling that this is like speech or like comparisons, in that it involves some special grammar we have not been introduced to yet.

Who said it's supposed to be used within another complete sentence?

We have things like wej boq cha' two plus three which aren't themselves used inside other sentences; why should wej loch cha' do so?

The difference between wej boq cha' and wej loch cha' is that wej boq cha' has a response: chen vagh. wej loch cha' has no equivalent response, unless it's chen pagh vI' jav jav jav 'ej reH taH javmey. But neither form is directly usable in another sentence, and no one has complained about wej boq cha' before.

I would not be at all surprised if the way to say two-thirds of a pie were wej lochbogh cha' chab. But we don't know that.

-- 
SuStel
http://trimboli.name