Passage: In September 2013, an order for five Airbus A320s and 18 A320neos was placed in a deal valued at USD2.5 billion; The carrier phased in its first aircraft, a 152-seater Airbus A320, in early April 2014. The carrier took ownership of its first two A320neos in October 2018. Qingdao Airlines plans to expand its fleet to 60 aircraft by 2020.

Question: How many Airbus A320's were ordered?
five