How many books were ordered by customer Kandy Adamec?
SELECT COUNT(*) FROM order_line AS T1 INNER JOIN cust_order AS T2 ON T2.order_id = T1.order_id INNER JOIN customer AS T3 ON T3.customer_id = T2.customer_id WHERE T3.first_name = 'Kandy' AND T3.last_name = 'Adamec'