For every passenger who takes the plane, for the part of the baggage that exceeds 20kg, a baggage ticket shall be purchased at the rate of 1.5% of the original price of the plane ticket per kilogram. Uncle Zhang flew from Nanjing to Beijing, and the air ticket was 480 yuan after a 40% discount. Uncle Zhang has 30kg of luggage, how much is the luggage fee?
乘坐飞机的每位旅客，携带行李超过20kg的部分，每千克要按飞机票原价的1.5%购买行李票．张叔叔从南京乘飞机去北京，飞机票打六折后是480元．张叔叔带了30kg的行李，应付行李费多少元？
<gadget id="calculator">60 / 100</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">480 / (3/5)</gadget>
<output>800</output>

<gadget id="calculator">30 - 20</gadget>
<output>10</output>

<gadget id="calculator">1.5 / 100</gadget>
<output>0.015</output>

<gadget id="calculator">800 * 10 * 0.015</gadget>
<output>120</output>

<result>120</result>