import java.math.*;
public class Valem implements Rahaarvutaja{
	public BigInteger leiaBrutoSumma(BigInteger netoSumma){
		BigInteger x = new BigInteger("0");
		x = ((netoSumma.add((new BigInteger("2000"))).multiply(new BigInteger("18"))).divide(new BigInteger("100")));
		return x;
	}	

}