You could seek reliable sources for the fission energy of 235U. It's around 200MeV, but doesn't result from a simple calculation, because it depends on how much Pu is side-produced and consumed: this increases easily by 1/4. As well, the fission products give some heat by radioactivity, which isn't negligible.
Same uncertainty for hydrogen fusion. The only reaction accessible to Tokamaks is D+T, but as we have very little T, the plans want to regenerate T from Li and the fast neutron emitted by D+T, and this second reaction changes the balance from roughly 17MeV to 24MeV, which depends on the neutron multiplicator.
232Th is NOT a fissile material, sorry. Some people have considered it as a fertile material to produce the fissile 233U in a breeder, but even with a reactor kernel of plutonium, regeneration seems impossible to achieve. Though, some limited proportion of 232Th can be and is consumed in normal pressured-water reactors (VVER) as a complement to 235U, so you could base on the heat produced by the fission of 233U, and optionally its production from 232Th.