obračunati

1. (obračunati se s + instr.) to deal with; to settle scores with
   Vlada je obećala da će se obračunati s korupcijom. — The government promised to deal with corruption.
   Policija se obračunala sa kriminalnom bandom. — The police cracked down on the criminal gang.
2. (obračunati se) to clash; to fight
   Navijači su se obračunali posle utakmice. — The fans clashed after the match.
3. (of money) to calculate; to work out
   Računovođa je već obračunao plate za septembar. — The accountant has already calculated the September salaries.
   Banka mi je obračunala previsoku kamatu. — The bank charged me too much interest.

In the senses "deal with" and "clash" it is reflexive and takes s(a) + instr.