The students in the third grade formed a square team with 12 rows and 12 people in each row. Later, due to insufficient clothing, we had to remove one row and one column. How many students were removed?
三年级的学生组成一个正方形方队，共12行，每行12人，后来由于服装不够只好去掉一行一列，问去掉了多少名学生？
<gadget id="calculator">12 * 2</gadget>
<output>24</output>

<gadget id="calculator">24 - 1</gadget>
<output>23</output>

<result>23</result>