There are a total of 100 students in a certain school taking the exam, with an average score of 85, of which the average score for male students is 65, and the average score for female students is 90. How many fewer male students than female students?
某校共有100名学生参加考试，平均分为85分，其中男同学平均为65分，女同学平均为90分，男同学比女同学少多少人？
<gadget id="calculator">2_000 / 25</gadget>
<output>80</output>

<gadget id="calculator">100 - 80</gadget>
<output>20</output>

<result>20</result>