A train travels from A to B, and it needs to stop at 3 stations on the way. In order to meet the needs of all passengers, how many different tickets do the stations need to prepare for this train?
一列火车从甲地开往乙地，途中需要停靠3个站，为了满足所有旅客的需要，车站需要为这列火车准备多少种不同的车票？
<gadget id="calculator">4 / 2</gadget>
<output>2</output>

<gadget id="calculator">5 * 2</gadget>
<output>10</output>

<result>10</result>