The number of students in Class A and Class B is equal, and some students each participate in the extracurricular astronomy group. The number of students in Class A who participate in the astronomy group is 1/3 of the number of students in Class B who do not participate in the astronomy group. (1/4). The number of people in class A who did not participate is the number of people in class B who did not participate ((())/(())).
甲乙两班学生人数相等，各有一些同学参加课外天文小组，甲班参加天文小组的人数是乙班没参加人数的(1/3)，乙班参加天文小组的人数是甲班没参加人数的(1/4)．甲班没参加的人数是乙班没参加人数的((())/(()))．
<gadget id="calculator">8 / 9</gadget>
<output>8/9 = around 0.888889</output>

<result>8/9 = around 0.888889</result>