23.817 kg
[tex]\sf 1 kg \rightarrow 1000 \ grams[/tex]
[tex]\sf 1 \ gram \rightarrow \dfrac{1}{1000} \ kg[/tex]
[tex]\sf 23817 \ gram \rightarrow ( \dfrac{1}{1000} \ x \ 23817 ) \ kg[/tex]
[tex]\sf 23817 \ gram \rightarrow 23.817 \ kg[/tex]