Calc GaoGaiGar - EI-06 explodes

EI-06's destruction would wipe out everything in a 20km radius. Play around with the nuke calculator, and we get a yield of 21.74 megatons for airblast (widespread destruction). However, we also see a fireball expanding in the simulation (which shows it growing to over 20km). For a fireball radius (ground contact airburst) of 20km, we have a yield of 4390 megatons (or 4.390 gigatons).

Final Results
EI-06's explosion (low end) = 21.74 megatons
EI-06's explosion (high end) = 4.39 gigatons

The Dividing Driver field would have been able to contain this explosion, but in order to attack EI-06 and remove its zonder core, GaoGaiGar would have to lower it's defensive barriers and leave it exposed, which would mean that with it's impact barriers up it could most likely withstand an explosion like this (it was all part of the zonders plan to trap GaoGaiGar into a situation where it was forced to be hit by an explosion without its barriers at point blank). Thankfully, ChoRyuJinn uses Eraserhead to nullify the explosion before it can do so.