Does the math.
They shouldn't even need that. IIRC there was an episode where the NID or someone had been cloning Goa'uld on Earth, which went poorly, but showed that Goa'uld could be cloned with genetic memory by a primitive planet.Stargate SG-1
The Tok'ra took Ba'al's cloning technology when they captured him and used it to clone their dead Queen Egeria from tissues samples they had, effectively resurrecting her. They are now capable of replenishing their numbers, with the only limit to their population growth being the number of willing hosts they can recruit.