How to calculate the natural abundance of an isotopic molecule

[Alex123123]

Fancy tittle.

I'm just trying to figure out how to get the natural abundance for H2(O17).

Will it be the same as the abundance of plain O17 alone? I mean, somewhere in my mind that makes sense because here I'm taking into account 100% of the H, so H seems like it does not really matter on this problem. I (probably) just want the abundance of water with isotopes O17 regardless of the type of H isotope it might bond with...