A train travels from A to B, and stops at 10 stations (not including A and B). How many types of tickets should the railway department prepare?
火车从A地到B地，中间停靠10个车站(不包括A、B两站)，铁道部门共要准备多少种车票？
<gadget id="calculator">10 + 2</gadget>
<output>12</output>

<gadget id="calculator">12 * 11</gadget>
<output>132</output>

<gadget id="calculator">2 * 1</gadget>
<output>2</output>

<gadget id="calculator">132 / 2</gadget>
<output>66</output>

<result>66</result>