Doraemon is a cat-shaped robot from the future world, who helps Nobita solve various difficulties with his magical treasure bag and various wonderful props. Doraemon's birthday is September 3, 2□12. The six-digit number 2□1293 composed of year, month and day is a multiple of 9. What is the year of Doraemon's birth?
哆啦A梦是一只来自未来世界的猫型机器人，用自己神奇的百宝袋和各种奇妙的道具帮助大雄解决各种困难．哆啦A梦的生日是2□12年9月3日，由年月日组成的六位数2□1293是9的倍数，请问哆啦A梦的出生年份是多少年．
<result>2_112</result>