A girl scout troop sold cookies to raise funds. Each troop member recorded the number of boxes she sold. The number of boxes sold was normally distributed with a mean of 22 boxes sold and a standard deviation of 4 boxes. In order to help determine how many boxes would be sold the next year, the troop leader decided to focus on the range made from the bottom 30% to the top 20%. Find the number of boxes that represent the desired range values.