There are 24 seats in a row in a movie theater. Fangfang and Lily go to the movies together. Fangfang sits on the left and Lily sits on the right. How many different ways of sitting in the same row?
电影院里一排有24个座位，芳芳和莉莉一起去看电影，芳芳坐左边，莉莉坐右边，在同一排有多少种不同的坐法？
<gadget id="calculator">23 + 1</gadget>
<output>24</output>

<gadget id="calculator">23 / 2</gadget>
<output>23/2 = around 11.5</output>

<gadget id="calculator">24 * (23/2)</gadget>
<output>276</output>

<result>276</result>