A train bound for Shanghai has a total of 480 people. When it arrives at Hunan Station, the number of people who get off the train first (1/4), and those who get on the train again (1/4). How many people are there in total?
一列开往上海的火车共计480人，到达湖南站先下去车里人数的(1/4)，又上来车里人数的(1/4)，这时车里人数共有多少人？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 - (1/4)</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">1 + (1/4)</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">480 * (3/4) * (5/4)</gadget>
<output>450</output>

<result>450</result>