import java.text.*;
class ConvertMilesToKilometer 
{
    public static void main(String[] args) 
    {
        DecimalFormat df=new DecimalFormat("##.###");
        double miles[]={1,2,10};
        for(int i=0;i<miles.length;i++){
        double km = miles[i] * 1.609;
        System.out.println(miles[i]+"\t "+df.format(km));
        }
    }
}