There are 15 seats in a row of a movie theater. Xiao Ming and his father are sitting together, and his father is sitting on Xiao Ming's left. How many different ways of sitting do they have?
电影院一排有15个座位，小明和爸爸坐在一起，并且爸爸坐在小明的左边，请问他们一共有多少中不同的坐法．
<gadget id="calculator">15 - 1</gadget>
<output>14</output>

<result>14</result>