Calculation for Hellstone
Here the calculations:
Multiple 1.2 to the HP of the previous, 1.2 to the previous defense and 1.35 to the previous money.
Example
1. To calculate Hellstone Lv.26, take the values from previous level.
Hellstone Lv. 25 - HP:254,389.91b | D:12,652.84b | $3,991,390,547.06b
2. Multiply Accordingly
Hellstone Lv. 26 - HP:254,389.91b * 1.2 | D:12,652.84b * 1.2 | $3,991,390,547.06b * 1.35
3. Tada!
Hellstone Lv. 26 - HP:305,267.89b | D:15,183.41b | $5,388,377,238.53b