/* package whatever; // don't place package name! */

import java.util.*;
import java.lang.*;
import java.io.*;
import java.math.*;

/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
private static final int SCALE = 2;

    public static void main(String[] args) {
        new Ideone().run();
    }

    private void run() {
        BigDecimal hundredLbs = new BigDecimal(100.00);
        BigDecimal hundredInches = new BigDecimal(100.00);

        System.out.println(hundredLbs + " pounds is " + poundsToKilos(hundredLbs) + " kilos and converts back to " + kilosToPounds(poundsToKilos(hundredLbs)) + " pounds.");
        System.out.println(hundredInches + " inches is " + inchesToMeters(hundredInches) + " meters and converts back to " + metersToInches(inchesToMeters(hundredInches)) + " inches.");
    }

    private BigDecimal metersToInches(BigDecimal meters) {
        return meters.multiply(new BigDecimal(39.37)).setScale(SCALE, BigDecimal.ROUND_HALF_UP);
    }

    private BigDecimal inchesToMeters(BigDecimal inches) {
        return inches.multiply(new BigDecimal(0.0254)).setScale(SCALE, BigDecimal.ROUND_HALF_UP);
    }

    private BigDecimal kilosToPounds(BigDecimal kilos) {
        return kilos.multiply(new BigDecimal(2.2046226218)).setScale(SCALE, BigDecimal.ROUND_HALF_UP);
    }

    private BigDecimal poundsToKilos(BigDecimal pounds) {
        return pounds.multiply(new BigDecimal(0.453592370010035)).setScale(SCALE, BigDecimal.ROUND_HALF_UP);
    }
}