INTEGER DIVISION
There is a special operator, DIV, used when you wish to divide one integer by another (ie, you can't use / ). The following program demonstrates this,

	program INTEGER_DIVISION (output);
	var     number1, number2, number3 : integer;
	begin
	       number1 := 4;
	       number2 := 8;
	       number3 := number2 DIV number1;
	       writeln( number2:2,' divided by ',number1:2,' is ',number3:2)
	end.

	Sample Output
	8 divided by  4 is  2

MODULUS
The MOD keyword means MODULUS, ie, it returns the remainder when one number is divided by another,

	The modulus of 20 DIV 5 is 0
	The modulus of 21 DIV 5 is 1

	program MODULUS (output);
	var     number1, number2, number3 : integer;
	begin
	       number1 := 3;
	       number2 := 10;
	       number3 := number2 MOD number1;
	       writeln( number2:2,' modulus ',number1:2,' is ',number3:2)
	end.

	Sample Output
	10 modulus  3 is  1

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