The third-grade students formed a square team to perform group gymnastics, a total of 8 rows, 8 people in each row. Later, because of insufficient clothing, they had to remove one row and one column. How many students were removed in total?
三年级学生组成一个正方形方队表演团体操，共8行，每行8人，后来由于服装不够，只好去掉一行一列，共去掉了多少个学生．
<gadget id="calculator">8 * 2</gadget>
<output>16</output>

<gadget id="calculator">16 - 1</gadget>
<output>15</output>

<result>15</result>