//Sample04_01.java
class Sample04_01 {
	public static void main(String[] args){

		System.out.println(0.1 + 0.2);
		System.out.println(0.3 * 3);
		System.out.println(0.42 / 3);
		System.out.println(0.6 + 0.7);
		System.out.println(0.67 * 3);
		System.out.println(0.8 - 0.1);
		System.out.println(12742 * 3.14);
	}
}