Cost per research point calculator

[guybrush threepwood]

Ok I have looked in the manual and made a quick search here on the forum, but I am not sure I fully understand experience in the context of research.

What I gathered so far was:

Units level at 15, 50, 100, 200 & 400 xp (and no more?).

Each level gives +1 to research.

Each unit automatically gets +1 xp each round.

But does a unit not gain some "research xp" or some such in addition if it is just hanging around doing research?

Hopefully someone can clarify this so I can take experience into account in the calculations