In a certain mathematics competition, there were originally 8 first prizes and 16 second prizes. Now the last 4 first prizes are adjusted to the second prizes. In this way, the average score of the students who won the second prizes increased by 1.2 points. The average score of the first-class students increased by 4 points, so how much more is the average score of the first prize than the average score of the second prize?
某次数学竞赛原定一等奖8人，二等奖16人，现在将一等奖中最后4人调整为二等奖，这样得二等奖的学生的平均分提高了1.2分，得一等奖的学生的平均分提高了4分，那么原来一等奖平均分比二等奖平均分多多少分．
<gadget id="calculator">4 * 4</gadget>
<output>16</output>

<gadget id="calculator">16 + 4</gadget>
<output>20</output>

<gadget id="calculator">20 * 1.2</gadget>
<output>24</output>

<gadget id="calculator">16 + 24</gadget>
<output>40</output>

<gadget id="calculator">8 - 4</gadget>
<output>4</output>

<gadget id="calculator">40 / 4</gadget>
<output>10</output>

<result>10</result>