The cost of a lesson varies based on the length of the lesson and the skill level of the student. In cell G$3,$ use INDEX and MATCH functions to retrieve the lesson fee for each student from the Lesson$\_$Pricing named range. For the students with no skill level, a #N$/$A error will be returned. Incorporate an IFERROR function so that if an error is returned, the student is charged $$50$ for the lesson.

Copy the formula down through G$29.$