Mod
  

Returns the remainder after a number is divided by a divisor.

syntax
Mod(dividend;divisor)

input
real number
divisor must be different 0

returns
real number

example
Mod(11;4) = 3 because 11/4 = (2*4)+3 remainder
Mod(6;2) = 0 because 6/2 = (2*3)+0 remainder