Microsoft® Visual Basic® Scripting Edition Mod Operator 
Language Reference Version 1

Used to divide two numbers and return only the remainder.
result = number1 Mod number2The Mod operator syntax has these parts:
Part Description result Any numeric variable. number1 Any numeric expression. number2 Any numeric expression.
The modulus, or remainder, operator divides number1 by number2 (rounding floatingpoint numbers to integers) and returns only the remainder as result. For example, in the following expression, A (which is result) equals 5.
If any expression is Null, result is also Null. Any expression that is Empty is treated as 0.A = 19 Mod 6.7