Yes, Raku is one such language.
Perl also provides this through the Math::BigRat module, and also the bigrat pragma: 
> >perl -Mbigrat -le "$x = 4; print $x/6;"
2/3

[download]
Math::GMPq is another module that provides for rational arithmetic.

Cheers,
Rob

In reply to Re^6: Behaviour of int() unexpected by syphilis
in thread Behaviour of int() unexpected by ceade1000

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