Question: What is the lowest high position for 10 years of hits, and over 870000 sales?
SQL: SELECT MIN("Highest Position") FROM "2-1145970-5" WHERE "Album Title" = '10 years of hits' AND "Sales" > 870000.0;

Question: What is the average high position for the album Unwritten?
SQL: SELECT AVG("Highest Position") FROM "2-1145970-5" WHERE "Album Title" = 'Unwritten';