6,8888... /2,4444.. =

a = 6,8888....
10a = 68,888....
----------------------- -
-9a = -62
a = 62/9

b = 2,4444....
10b = 24,4444...
-9b = -22
b = 22/9

6,8888.... / 2,4444.... = a/b
= (62/9) / (22/9)
= 62/22
= 31/11
= 2,8181....

jawabannya : 6.888/2.444 = 2.82