The express train from Nanjing to Beijing has to stop at 12 stations besides the starting point and the ending point. How many kinds of tickets should be prepared at the railway station?
从南京到北京之间的快车，除起点，终点外还要停靠12个站，火车站要准备多少种车票．
<gadget id="calculator">12 + 2</gadget>
<output>14</output>

<gadget id="calculator">14 - 1</gadget>
<output>13</output>

<gadget id="calculator">14 * 13</gadget>
<output>182</output>

<result>182</result>