 Calculate reach and frequency and then compare the two on the basis of how many people will be reached with each schedule and the number of times the ad will connect with the average person.Let's say the ad appeared in each of four television programs (A, B, C, D), and each program has a 20 rating, resulting in a total of 80 gross rating points.It is possible that some viewers will see more than one announcement—some viewers of program A might also see program B, C, or D, or any combination of them.