Write a SELECT statement that answers this question: What is the total number of courses taught by part$-$time instructors only? Return these columns:

The instructor's last name and first name from the Instructors table in this format: Doe, John $($Note: If the instructor first name has a null value, the concatenation of the first and last name will result in a null value.$)$

The total number of courses taught by each instructor

Use the ROLLUP operator to include a row that gives the grand total.

$\{?$ Accessibility: Good to go

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