CREATE TABLE table_name_75 (prom__m_ INTEGER, peak VARCHAR(255), height__m_ VARCHAR(255), class VARCHAR(255))
What is the average prom (m) when the height (m) is more than 733, the class is Hewitt, and the peak is Kirk Fell East Top?
    
SQL: SELECT AVG(prom__m_) FROM table_name_75 WHERE height__m_ > 733 AND class = "hewitt" AND peak = "kirk fell east top"