For employee training the employee to instructor ratio is 18 to 2 if there are 36 instructors for the training how many employees participated in the training
If the employee to instructor ratio is 18 to 2, then for every two instructors, there are 18 employees participating in the training.
Therefore, with 36 instructors, there would be 18 employees for every 2 instructors, resulting in 36/2 * 18 = <<18/2*36=324>>324 employees participating in the training. Answer: \boxed{324}.