A train departs from Tongxiang to Hangzhou and stops at Chongfu and Linping stations along the way. How many different tickets should the railway department prepare for this train?
一辆列车从桐乡开往杭州，沿途停靠崇福、临平2个站，铁路部门要为这辆列车准备多少种不同的车票．
<gadget id="calculator">3 + 2 + 1</gadget>
<output>6</output>

<gadget id="calculator">6 * 2</gadget>
<output>12</output>

<result>12</result>