class Main {
	public static void main (String[] args) {
		System.out.println(123 * 100.0 / 10);
		System.out.println(123 * (100.0 / 10));
		System.out.println((double)123 * 100.0 / 10);		
		System.out.println(123 * 100.0 / (double)10);
		System.out.println(123 * 100 / 10);
		System.out.println(123 / 10 * 100.0);
		System.out.println(123 / (10 * 100.0));
		System.out.println((double)123 / 10 * 100.0);
		System.out.println(123 / (double)10 * 100.0);
		System.out.println(123 / 10 * 100);
	}
}

//https://pt.stackoverflow.com/q/442111/101