The average score of Li Qiang's five homework in the final exam was 60 points. In order to make his grades look good, he had an idea and changed the math score to 80 points, so that the average score increased by 10 points. After the careful mother found out, she educated Li Qiang. Li Qiang admitted his mistake, so how much is Li Qiang's math score?
李强期末考试五门功课平均分是60分，为了使自己的成绩好看，他灵机一动，将数学分数改成了80分，这样平均分就提高了10分，细心的妈妈发现后教育了李强，李强承认了错误，那么李强的数学到底多少分？
<gadget id="calculator">60 + 10</gadget>
<output>70</output>

<gadget id="calculator">70 * 5</gadget>
<output>350</output>

<gadget id="calculator">60 * 5</gadget>
<output>300</output>

<gadget id="calculator">350 - 300</gadget>
<output>50</output>

<gadget id="calculator">80 - 50</gadget>
<output>30</output>

<result>30</result>