/*
---------------------------------------------------
	四則演算	Print_enzan
---------------------------------------------------
*/

class Print_enzan {
	public static void main(String[] args) {
		
		int a,b,c,d,e,f,g;
		
		a=50;
		b=20;
		
		System.out.print("四則演算をします\n");
		System.out.print("ａ＝"+a+"　ｂ＝"+b);
		
		System.out.print("\n\n");
		
		c=a+b;
		d=a-b;
		e=a*b;
		f=a/b;
		g=a%b;
		
		System.out.print("ａ＋ｂ＝"+c);
		System.out.print("\n");
		
		System.out.print("ａ−ｂ＝"+d);
		System.out.print("\n");

		System.out.print("ａ×ｂ＝"+e);
		System.out.print("\n");

		System.out.print("ａ÷ｂ＝"+f);
		System.out.print("　あまり　"+g);
		System.out.print("\n");
	}
}