이해타산이 · 이해타산을
calculating gains and losses; self-interested calculation
Example
그 사람은 무슨 일이든 이해타산을 먼저 따져요.
Whatever it is, that person first weighs what's in it for him.
Word parts
이 gain+해 harm+타 strike+산 calculate
Literally 'calculating gain and harm.'
Good to know
Collocation: 이해타산을 따지다 'to weigh one's own gains and losses.'
Related words