There are 48 students in class 5 and 1 arranged in 2 rows, with 24 students in each row. If the order remains the same, how many different ways are there to ask 3 adjacent students in each column to come out?
五1班有48个同学正好排成2列，每列24人．如果前后顺序不变，每次请每列3个相邻的同学出列，一共有多少种不同的方法．
<gadget id="calculator">24 - 3</gadget>
<output>21</output>

<gadget id="calculator">21 + 1</gadget>
<output>22</output>

<gadget id="calculator">22 * 22</gadget>
<output>484</output>

<result>484</result>