The original members of the school gymnastics team can stand in 6 rows and 6 columns. Now we are going to expand the team to 8 rows and 8 columns. How many people need to be added?
学校体操队原有的队员可站成6行6列．现准备扩大队伍，增加到8行8列．需要增加多少人？
<gadget id="calculator">84 - 36</gadget>
<output>48</output>

<result>48</result>