There are 24 seats in a row in a movie theater. A mother takes her daughter to watch a movie. The mother sits on the left and the daughter 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，妈妈带女儿去看电影，妈妈坐左边，女儿坐右边，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>