How does PP raising calculation work?

Question

If we use a PP Up or PP Max, the PP will rise until a specified number.

• 5 to 8
• 10 to 16
• 15 to 24
• 20 to 32
• 25 to 40
• 30 to 48
• 35 to 56
• 40 to 64

How is Max PP calculated?

Answer 1

It's 8/5 of the base PP.
Source: the question