Zee Ltd issued 15,000 equity shares of Rs. 20 each at a premium of Rs. 5 payable Rs. 5 on application, Rs. 10 on allotment (including premium) and the balance on first and final call. The company received applications for 22,500 shares and allotment was made pro rata. Bittoo to whom 1,200 shares were allotted, failed to pay the amount due on allotment. Identify the number of shares Bittoo applied for.