/ Operator (C# Reference)
The division operator (/) divides its first operand by its second. All numeric types have predefined division operators.
When you divide two integers, the result is always an integer. For example, the result of 5 / 2 is 2. To determine the remainder of 5 / 2, use the modulo operator (%). To obtain a quotient as a rational number or fraction, give the dividend or divisor type float or type double. You can do this implicitly by putting a decimal point after the number, as shown in the following example.