There are 9 (including A and B) stations on the railway between A and B. How many different fares are there in total?
甲乙两城的铁路上有9个(包括甲乙)车站，一共有多少种不同的票价．
<gadget id="calculator">9 - 1</gadget>
<output>8</output>

<gadget id="calculator">9 * 8</gadget>
<output>72</output>

<result>72</result>