How do you calculate %xHKO?

Range A = a1 ~ a2= 100% OHKO
Range B = (a1 – F) ~ (a2 + S) = xx% OHKO

A = 600 ~ 1000 <60% mastery, it might be the flaw in this
B = ?

1000 – 600 = 400 = 100%

S= 400 x 95% = 380
F = this is where it gets tricky

Have to add new range C: >600 ~ 600 = xKHO
(1000 – 600) / 0.6
400 / 0.6 = 240
There is where we get our last 5% from

F = 240 x 5% = 12

**0.6 = mastery**



Tadaa, range is 588 ~ 980. The 60% mastery is there.
If I'm wrong, please tell me.


PS: sorry for my sloppiness