import java.util.Scanner;

public class Main $\{$

public static void main$($String$[]$ args$)\{$

Scanner scnr $=$ new Scanner$($System$.$in$)$;

$//$ Error $1$: Use double for floating$-$point input

double weightMg;

double weightGrams;

$//$ Error $2$: Use nextDouble$()$ to read a floating$-$point value

weightMg $=$ scnr$.$nextDouble$()$;

$//$ Error $3$: Convert milligrams to grams by dividing by $1000\mathrm{.}0($not $1000)$

weightGrams $=$ weightMg $/1000\mathrm{.}0$;

$//$ Display the result with three decimal places

System.out.printf$("\%\mathrm{.}3$f grams", weightGrams$)$;

$\}$

$\}$