In the final exam, Xiaoming scored 75 points on average in Chinese, Mathematics, and English. The ratio of his three subjects is 8:9:8. What is his math score?
小明在期末考试中语文、数学、英语的平均分为75分，它的三门学科成绩的比为8：9：8，它的数学成绩是多少分？
<gadget id="calculator">8 + 9 + 8</gadget>
<output>25</output>

<gadget id="calculator">3 / 25</gadget>
<output>3/25 = around 0.12</output>

<gadget id="calculator">75 * (3/25) * 75 * (3/25)</gadget>
<output>81</output>

<result>81</result>