Provide a list of all of the students, the number of courses they are taking, and the number of different instructors they have across all of their courses. The first column should provide the last name of each student (column titled Student Last Name). The second column should provide the number of courses that each student is taking (column titled Number of Courses). The third column should provide the number of different instructors that each student has for all of the courses they are taking (column titled Number of Different Instructors). No other columns should be provided in the result.