As per the `bc` doc:

> expr / expr
>
> The result of the expression is the quotient of the two expressions. The scale of the result is the value of the variable scale.

So use `scale=0` to have an integer division:

 >bc <<<'scale=2; 8/3' 
 2.66 

 >bc <<<'scale=0; 8/3'
 2