The average score of a class in statistics mathematics is 95.13. During the re-examination, it was found that one person's score was 97 points and was mistakenly counted as 79 points. Re-statistics, the average score is 95.49 points. How many students are there in this class.
某班统计数学成绩，平均分为95.13分．复查时发现一人成绩是97分误为79分统计．重新统计，平均分为95.49分．这个班有多少个学生．
<gadget id="calculator">97 - 79</gadget>
<output>18</output>

<gadget id="calculator">95.49 - 95.13</gadget>
<output>0.36</output>

<gadget id="calculator">18 / 0.36</gadget>
<output>50</output>

<result>50</result>