In an exhibition organized by company $A$ and $B$ together, there is a total of $498$ exhibits produced by only $A$, or only $$B$$, or both. Among them, $$266$$ exhibits are not produced by company $A$ and $$178$$ exhibits are not produced by company $$B$$. How many exhibits are produced by both company $A$ and $$B$$? 
Overseas Competition->Knowledge Point->Counting Modules->Inclusion-Exclusion Principle