Very rapid multiplication of (RU)

import java.util.Scanner; import java.math.BigInteger;

public class Main { public static void main(String[] args) { Scanner scanner = new Scanner(System.in); String input = scanner.nextLine(); String[] numbers = input.split(" "); BigInteger A = new BigInteger(numbers[0]); BigInteger B = new BigInteger(numbers[1]);

    BigInteger product = A.multiply(B);
    String result = product.toString().replaceFirst("^0+(?!$)", "");

    System.out.println(result);
}

}