uri friedberg

I will be thankful if you could solve my puzzle regarding universe expansion.
Considering a flat universe, Lambda constant.
If we shall denote Hubble length (Radius) as one unit, and mass equal to one unit.
What is the mass of a world (sphere) with co-moving distance equal to 3.3 Hubble length (Particle Horizon) in terms of the mass of Hubble sphere,
and the mass of a world with co-moving distance of 4.5 (The size of the universe we shall ever see) in terms of the mass of Hubble sphere,
Appreciate your time and kindness (Is the mass just the rario of lengths to the cube?).
Uri Friedberg