There are 28 seats in a row in the stands of the gymnasium. Dad and Xiaoqi went to watch the game. They sat together, and Xiaoqi sat on the left of his father. How many different ways of sitting are there in the same row?
体育馆的看台一排有28个座位，爸爸和小奇去看比赛，他们俩坐在一起，并且小奇坐在爸爸的左边．在同一排有多少种不同的坐法？
<gadget id="calculator">28 - 1</gadget>
<output>27</output>

<result>27</result>