Talk:Forest/@comment-2003:C2:73E9:8D00:B453:24A8:9201:A198-20180514204839

Easiest way to calculate the needed summation is this formula:

Base Cost  x  2^(Defeated Monsters +1)

This value is slightly higher that needed, but it's not of much influence.

Example: When I have 40/50 monsters killed and it costs 2M for the actual monster, I take

2M x 2^11 = 2M x 2000 = 4B

A Nice-To-Know is the fact, that 2^10 = 1024 ~ 1000. This way it's easy to calculate everything with a minimum use of calculator - or with out it in some seconds.