Teacher Li flew from Yangzhou Taizhou Airport to Beijing, and the air ticket was 720 yuan after a 40% discount. He brought 30 kilograms of luggage. According to the regulations of the Civil Aviation Administration of China, each adult passenger can carry 20 kilograms of luggage for free. If it exceeds 20 kilograms, the excess part will be charged at 1.5% of the original price of the ticket for each kilogram. How much should Mr. Li pay for the checked luggage?
李老师从扬州泰州机场乘飞机到北京，飞机票打六折后是720元．他带了30千克的行李，按照民航总局规定：每位成人旅客可以免费携带20千克行李，如果超过20千克，超过的部分每千克需按机票原价的1.5%付行李托运费．李老师应付行李托运费多少元？
<result>105</result>