Civil Aviation of China stipulates that a passenger in an ordinary cabin can carry up to 20 kilograms of luggage for free, and the excess part will be purchased as a luggage ticket (3/200) of the plane fare. A passenger spends 1,000 yuan on an air ticket and takes 25 kilograms of luggage on board. How much is the luggage fee he should pay?
中国民航规定：乘坐普通仓的旅客一人最多可以免费携带20千克行李，超过部分每千克按飞机票价的(3/200)购买行李票．一名旅客买机票花了1000元，带了25千克行李乘机，他应付行李费多少元？
<gadget id="calculator">3 / 200</gadget>
<output>3/200 = around 0.015</output>

<gadget id="calculator">25 - 20</gadget>
<output>5</output>

<gadget id="calculator">1_000 * (3/200) * 5</gadget>
<output>75</output>

<result>75</result>