Understanding how to divide thirty into three equal parts, essentially (7)
I believe the answer is:
entente
'understanding' is the definition.
(entente is a kind of understanding)
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for entente that I've seen before include "friendly relations" , "Harmony" , "Political agreement" , "A friendly understanding between countries, may be cordial" , "International agreement" .)